By
In
Chromic acid anodizing can be used for inspection of aluminum forgings or castings by noting evidence of chromic acid bleed out from laps, cracks, seams, etc. The anodizing is done by Victor @ US Anodizing in his "XM" gray. Packaged in both liquid (for application with spray equipment) and convenient aerosol cans. 186 thoughts on “ DIY Cast AR-15 Receivers Are More Interesting Than So as usual it depends on one defines the gray areas :). hook screws china anodizing aluminum solar roof hook screws hook screws walmart j hook screws. Reading the client testimonials of No. Prices include shipping. hook screws wall mounting screws with steel ring hook screws bunnings pigtail hook screws. The barrel is a 20" 1:9 pencil barrel with. Ammo 45 Colt Hardcast Ammo You will not regret if check price. com parkerizing, anodizing, and bluing. Hard Anodizing. Currently it is available in black, gray, and OD green (shown). We also offer the ability to upgrade to a more "tacticool" Spike's Tactical Lower. Our C9 platform is Colt Compatible allowing you to run your existing colt 9mm magazines. If you are searching for read reviews Ar15a4 Charging Handle Assembly Colt price. 380 that remained with me until I replaced it with the smaller Colt Mustang, and later an alloy-framed Colt Mustang Pocketlite, both in. James Sullivan. Anyways it has a Nodak Spud upper and lower with grey anodized finish and a nodak spud grey charging handle. Use our Anodizing Kit. The worst I will say is "No thanks" Colt 6520 upper: 575. 9% condition. The 204R1. Matte black hard-coat anodized per Mil 8625 Type 3 Class 2 - per part (all AR style upper and lower receivers, no component build parts at this time) Send your item to be anodized with a copy of your paid order to: New Frontier Armory, LLC 55 W Mayflower Ave North Las Vegas, NV 89030. 555 Gray Polish Brownells. Shotgun Shorty Ramps Williams Gun Sight. Combative Firearms Training School Armorer Training Services Combat Lab is a combative firearms training school founded in 2001 that specializes in individual and agency level maintenance and armorer training for a variety of the most common weapons found on the streets today. This doesn't include the military weapon side Colt or FN who are (have been) supplying M-16 variants to the govt. Shop for Low Price Ar15a4 Ejector/safety Detent Spring Colt. In the past, a firearms finish was obtainable only by vatting, anodizing, bluing or Parkerizing. 555 Gray Polish Brownells from here. not wonder you're looking for coupons. Lastly, I hope that this reviews concerning this No. I will call in short name as No. GREENISH-GRAY Flat. "Today, if you do not want to disappoint, Check price before the Price Up. Our new Southwest series comes from Lisa Strange. It carries a stainless steel slide that sits atop a machined, 7075-T6 lightweight aluminum frame which is gray hard-coated over anodizing. Some guys cerekote their lowers to match an old, worn, original upper. Extremely hard, excellent at wear resistance, and very corrosion-resistant. Additional colors may be an additional fee for gray scale engraving. Colt M16A1 with factory, gray anodizing, NEW IN THE ORIGINAL CARTON, wick in the barrel, original accessories in carton and the weapon was never oiled in 99. I would not expect any different from Colt or Buds. You should to find the most effective price because sometimes it can help you in buying options. 555 Gray Polish Brownells is one of the best selling item on today. Very few gun refinisher services offer hard coat anodizing, especially of the flat gray or black the AR's are finished in. 555 Gray Polish Brownells is best in online store. 1st up: Unissued Finnish M39. I know this is gonna sound like a stupid question about a minor BS issue. Product Description. It is an excellent, all Colt weapon, with 20" barrel in. Black, Red, Blue and other colors are dyes used after anodizing and are not required for complete protection. 555 Gray Polish Brownells. Any orders required for the same day are considered ***HOT/RUSH*** Orders and there will be an expedite fee of 40% of your total. Speer Gold Dot Ammo 38 Special +p 135gr Hp Speer. 6-20 $150 ea. Type 1 is not as readily dyed as sulfuric anodize. The retro subforum on ar15. SNIPER GREY Item: C-239Q. LPK is Colt, BCG is a spikes I had. Colt model 603 M16A1 Upper Receiver Assembly - with Forward Assist. Combining our T-360™ coating with the type-III anodizing process, any user will be hard pressed to remove or discolor these magazines. COLT 1991 45ACP 5″ FS 7-SHOT CERAKOTE STONE GREY 1 OF 300 - Colt O1991Z. There is a charge for Armor Black when in conjunction with any other color. 555 Gray Polish Brownells. Extremely hard, excellent at wear resistance, and very corrosion-resistant. Because telling its unrivaled understanding, improved also at this point accommodated not any in excess of alone. Wear life when. One matte black and the other black teflon. Unfortunately my Colt Sporter is a pre ban gray/blue in color. Cerakote Coatings for Guns. In 1973, all the Brazilian armed forces used the 1911 in. It features a stealth blend cerakote using Stone Grey and Midnight $ 1,100. Watch this science video tutorial from Nurd Rage on how to make silver different colors by electrochemical anodizing. Available in over 300 colors including specialty color collections. Colt Single Action Hand Slot Stoning Kit Brownells. This is the same mount that many of the top pro teams run. Colt A2 fixed carryhandle receivers, black and gray current production and vintage. Precision Rifle Compensator 30 Caliber Primary Weapons. There's one in the large "O" in the "Colt" and the other is below the "CMH". 555 Gray Polish Brownells cheap. Aluminum Loading Blocks Lyman. The retro subforum on ar15. The marking ahead of the front ring matches the serial number for the Remington 700 rifle that was paired with the scope. 555 Gray Polish Brownells For those who are looking for No. Colt AR-15 For Sale at GunAuction. The Colt Defender offers power and performance every time. The receivers were blem. Ar-15 Engage Version 2 Pistol Grip Polymer Mission First Tactical, Llc. Because telling its unrivaled understanding, improved also at this point accommodated not any in excess of alone. Hard coat anodizing provides a good level of protection against corrosion and abrasions. 223 and triangle hand guard, all original weapon. 1 review of US Anodizing, Inc "Wow. Correct A1 style ejection port door. Love Duracoat. Matte black hard-coat anodized per Mil 8625 Type 3 Class 2 - per part (all AR style upper and lower receivers, no component build parts at this time) Send your item to be anodized with a copy of your paid order to: New Frontier Armory, LLC 55 W Mayflower Ave North Las Vegas, NV 89030. The new Brownells Retro rifles and parts are of excellent quality and authentically reproduced overall. Ar-15 Engage Version 2 Pistol Grip Polymer Mission First Tactical, Llc. Slimmer diameter is great to save space or for smaller hands. N550 Powder - 1 Lb Vihtavuori. Controls on the Colt Expanse M4 are not ambidextrous: the magazine release and safety switch are located on the right side of the lower receiver, the hold-open device is on the left, the cocking handle is a baseline model with none of the fancy quick-charging or extended latches so common these days. Let me know if anyone wants any of this. We were told it was some issue with the anodizing process. Black, Red, Blue and other colors are dyes used after anodizing and are not required for complete protection. 1st up: Unissued Finnish M39. Free shipping and returns on "Ar15a4 Charging Handle Assembly Colt Online Wholesale" for you purchase it today !. While driving back to work, I got to thinking…Hey, was the Cobra ever made with a glossy anodized/blued finish?. ⭐️⭐️⭐️⭐️⭐️ On the other hand, I hope that it reviews about it No. 555 Gray Polish Brownells from variety stores in usa. It was advertised as black and almost new. TYPE II ANODIZING. Price Low and Options of Ar15a4 Ejector/safety Detent Spring Colt from variety stores in usa. The marking ahead of the front ring matches the serial number for the Remington 700 rifle that was paired with the scope. , j&g sales waxed canvas ball cap hat. I will call in short word as No. 555 Gray Polish Brownells before buy. Unlike other magazines that use inferior coatings to color their aluminum USGI style magazines, DURAMAG Speed™ colors are part of the anodizing process and thus, a part of the metal. This upper does not come with the charging handle or bolt carrier group, allowing the user to personalize their upper receiver even more!. Moly Resin was specifically designed for firearm owners for application in your shop or home. Ar-15 Engage Version 2 Pistol Grip Polymer Mission First Tactical, Llc. Découvrez vos propres épingles sur Pinterest et enregistrez-les. After nearly 20 years, the coating that started the Color Revolution is still #1. Ar15a4 Charging Handle Assembly Colt. i been thinking on building a colt A1 from those surplus kits. The 1911 Deluxe Checkered Grip takes all the utility and durability found in the Standard Checkered Grip and adds a touch of class with its embedded design. I pinned it on several lowers and had no mating issues. JP Enterprises: PSC-11™ upper assembly with JP-15™ lower assembly Receiver Finish: Black Teflon over hard coat anodizing Barrel: 16” light contour JP Supermatch™ with black Teflon finish Muzzle Treatment: Small-profile JP Compensator Gas System: JP adjustable minimized gas block Bolt Carrier: JP Full Mass Bolt Carrier Hand Guard: Rifle-length JP Modular Hand Guard Stock: Magpul CTR. DuraCoat® Paint. Shade of green or blue -- Find potential answers to this crossword clue at crosswordnexus. From RetroRifles. 555 Gray Polish Brownells. It will give a much fuller understanding to you of the professionals and cons of it. Colt A2 fixed carryhandle receivers, black and gray current production and vintage. We've more info about Detail, Specification, Customer Reviews and Comparison Price. You will get No. retail price. I assume your Defender frame is hard anodized, but do not know that for sure. Mike's metal working skills have always impressed me, and this project didn't change that. Watch this science video tutorial from Nurd Rage on how to make silver different colors by electrochemical anodizing. Type III Hard Anodizing. The easiest way to ensure we would get that "oldschool Colt grey" would be to bead blast everything, and either have them anodized or Cerakoted. Great shooter right out of the box, looks are 10 out of 10. com Description. Each dye is mixed with 2 gallons of water. Our C9 platform is Colt Compatible allowing you to run your existing colt 9mm magazines. There is a slight wear mark on the top of the lower from the dust cover. Color matching original Colt M16 Gray lower submitted 1 year ago by drunktrainconductor So I just built a new upper for my registered M16 lower and I want to color match the original colt gray. Unfortunately the are some casting marks on the right and left hand sides near the rear locking pin. Hard coat anodizing provides a good level of protection against corrosion and abrasions. (BTW, Colt factory color for receivers has a green tint/tinge/subtlty to it as opposed to the regular black other marques use). Compare prices for Ar15a4 Receiver Extension Colt You can order Ar15a4 Receiver Extension Colt after check, compare the and check day for shipping. You will buy many rolls of tape to last as long as this part will. Price Low and Options of No. The new version of the Katana is based on Colt's first attempt with the carbine length AR. 555 Gray Polish Brownells is integrated that you must have, be sure to order now to stay away from disappointment Click on right here to find out exactly where to get the very best deal on No. If you have questions please let us know. Very nice only problem is the modern anodizing. Matte gray anodizing (not painted) I was surprised at what the Colt SP1 guns are going for. Or If you need to buy No. GRAY Flat A match to older gray military parkerizing including some very early Colt M-16 rifles. Prices include shipping. ALG Defense is a relatively new company started by Amy Geissele. We've more details about Detail, Specification, Customer Reviews and Comparison Price. Moly Resin was specifically designed for firearm owners for application in your shop or home. 555 Gray Polish Brownells For those who are looking for No. Bob Probert's answer to the impregnation of anodizing is right on. A step back to the earliest days of the AR-15, the BRN-Proto is a faithful and functional replica of the first prototype of the rifle — an adaptation of Stoner’s AR-10 by L. 555 Gray Polish Brownells. Hardcoat Anodizing (Type II & III) Greystone of Virginia offers custom hard coat Aluminum anodizing developed internally through pulse rectification for critical wear requirements on a variety of aluminum alloys and processes including castings and extrusions. I pinned it on several lowers and had no mating issues. They keep using them since it is a part that does not wear out. In 1973, all the Brazilian armed forces used the 1911 in. Beginning in the mid 1960s a commercial model was released called the Sporter 1. Clear anodizing provides a uniform satin fi nish that resists oxidation. I can't see a blem on the lower but the upper has some finish imperfections on the right side. James Sullivan. The barrel is a 20" 1:9 pencil barrel with. This was applied through a re-arsenal process. I'm trying to match the hardcoat grey anodizing found on colt rifles produced during the Vietnam era. Find more Good Sale and More Promotion for Ar15a4 Charging Handle Assembly Colt Online Best Reviews shot That is Ar15a4 Charging Handle Assembly Colt Sale Brand New for the favorite. Description AR-15 Stripped Upper Receiver - Purple Anodize. 380 ACP, and finally a double-action-only (DAO) Colt Pony in the same caliber. You will be surprised to see how convenient this device can be, and you will probably feel good knowing that this Ar15a4 Receiver Extension Colt is among the best selling item on today. Colt Model 603/US Army M16A1 Colt Model 609 / US Army XM177E1 Colt Model 629 / US Army XM177E2 Colt Model 649 / USAF GAU-5A/A Colt Model 653 *NOTES: Some models could have been found with more than 1 style of lower, for example the Colt Model 609 was found in the field with either a "partial" or a full mag fence A1-type lower. Be aware that hard anodizing and decorative anodizing are different processes with different results. There is a clear nickel acetate sealant applied over the anodizing and the steel parts in the rifle are also final finished in nickel acetate. The COLT 6920 trooper mentioned above comes from the factory with a free float centurion rail. 223 Remington. Built of aircraft grade aluminum to exacting specs. Cette épingle a été découverte par Juhász Ádám. ⭐️⭐️⭐️⭐️⭐️ If you searching for special discount you'll need to searching when special time come or holidays. The paint is wearing through, and some of the gray and a hint of gold/bronze anodizing is showing though. Pictures don't show it well, but this is upper is finished in the earlier Colt Grey Anodizing. The last pictures are to compare it to the current black ones. Price Low and Options of No. I've also found that the DD Omega rail is an easy way to free float an AR barrel without removing the delta ring. I'm doing a retro AR15 and no two parts are the same color. If you're not fully satisfied with your purchase, you are welcome to return any unworn and unwashed items with tags intact and original packaging included. LPK is Colt, BCG is a spikes I had. You will see blemishes. These receivers are machined to the M16A1 profile but retain the same precision as our highly praised AR15-A2 receivers. ⭐️⭐️⭐️⭐️⭐️ Shop for Best Price Ar15a4 Receiver Extension Colt. Gun Show tip: As you walk around gun shows, look for Colt 30 round magazines with dark green followers. Description. A single 4 oz container of coating is enough to coat a rifle or two handguns using an airbrush. Now I'm not particularly fussy when it comes to the appearance of my guns but mating the Colt Sporter lower with a black upper looks plain awful and something needs to be done. Scroll down for more on anodizing - it is truly a fascinating effect. There is a clear nickel acetate sealant applied over the anodizing and the steel parts in the rifle are also final finished in nickel acetate. Arrows show area where material was removed. Type 1 is not as readily dyed as sulfuric anodize. In addition, a refinish of anodized aluminum does remove a certain amount of aluminum during the process. Proudly made by American Machinists are these limited run of our solid Aluminum "Veritas Aequitast" design 1911 Grips. products sale. 555 Gray Polish Brownells is usually the most popular everything brought out this few days. 00 shipped or OBO A2 front and rear sight, 1/7 twist chrome lined barrel pencil barrel and Colt semi auto bolt carrier group. I believe they said it was USGI as well. 555 Gray Polish Brownells You will not regret if check price. The upper starts off as a 7075 T6 aluminum forging, then is machined to mil-spec dimensions. 56mm with green anodizing and black MAGPUL accessories, new in the box. I had a barrel snake with two patches running though the barrel and it got. Military to refinish Colt M-16's. I will call in short name as No. Troy 7" Carbine AR-15 Drop-In Rail Black I had gotten first the MAGPUL but that did not fit over the swivel for the sling on the front sight. 555 Gray Polish Brownells for your, but you don't know where to get the best price for this No. 555 Gray Polish Brownells from variety stores in usa. White Spots when Anodizing 6061 Aluminum and Dyeing It Blue open Q. Shop for Low Price No. This finish is only available for aluminum-alloy frames. 555 Gray Polish Brownells Reviews : Best Price!! Where I Can Get Online Clearance Deals on No. *NOTE: This product does not require catalyst. 1500 Barreled Action Lightweight Blue. Neither did and the matte unit has been sent out for anodizing of the correct color Colt Gray. 555 Gray Polish Brownells will end up being useful. See additional Gray choices in ZombieCoat and Tactical Ultra Flat color collections. 555 Gray Polish Brownells is best in online store. 1911 Auto Px-09 Polymer Extreme Grip Strike Industries. To get a cheap price or good deal. I also want level III anodizing and I don't want it distubed in critial wear areas like rails and ramp on my gun. Chambered in. There are a couple of very small nicks in the anodizing. I had originally found that Alumahyde Dark Parkerized Grey matches it. Or If you need to buy No. JPG and GIF files are low quality raster images and will always require vectorizing. We were told it was some issue with the anodizing process. How to calculate anodizing time for different load sizes (March 30. 555 Gray Polish Brownells. They are excellent at achieving the classic Colt grey finish because they have been finishing Colt receivers for decades. Shop for Low Price No. We also offer the ability to upgrade to a more "tacticool" Spike's Tactical Lower. This upper is clean, neat, and in EXCEPTIONAL cosmetic condition. These receivers are excellent quality and are finished off with a very durable layer of anodizing. i been thinking on building a colt A1 from those surplus kits. Milspec diameter Receiver Extension. 555 Gray Polish Brownells Even so, I hope that it reviews about it No. com is a wealth of info. Be aware that hard anodizing and decorative anodizing are different processes with different results. Can be applied to any type of metal, plastic, and wood. Browse Categories Colt 5 30rd AR15 5. You will find black M16 uppers, mostly XM16E1 and M16A1, that have a black finish. The lower receiver is an A2 style and has been coated with Brownell's Aluma-Hyde II in dark parkerizing grey to better match the color of the upper receiver. They are excellent at achieving the classic Colt grey finish because they have been finishing Colt receivers for decades. 555 Gray Polish Brownells is best in online store. Upper Receiver: Original style profile with forward assist, no shell deflector, matte gray anodizing, Nodak Spud 7075-T6 aluminum forging, machined by Brownells Note: The lower features a faux buffer tube retaining roll pin. Reading for your Ar-15 M4 Complete Lower Receiver 5. A1 'Bird Cage' flash hider with correct. Some guys cerekote their lowers to match an old, worn, original upper. This is our unboxing video for the Hogue Colt 1911 Government Magrip Kit mfg# 01260. Colt Factory D Frame Grips Detective Special, Diamondback, Agent Mint. Aluminium vs. You can also use the Brownells Alumahyde coatings in Parkerizing Gray (medium gray) or Dark Parkerizing Gray (dark gray) to get the XM Gray color. Increasing aluminum in chromic acid anodizing bath open Q. The Brownells Model BRN-601 Rifle ( Shown above) recreates the. Springfield Armory PG9109S 911 380 Automatic Colt Pistol (ACP) Single 2. The barrel is a 20" 1:9 pencil barrel with. Ar15a4 Charging Handle Assembly Colt. The colors of anodizing, other than the natural aluminum oxide gray, are produced with dyes and have nothing to do with the anodizing itself. I will call in short name as No. Type III, class 2 can be dyed and is specified on the contract drawings. 555 Gray Polish Brownells is best in online store. It will give you have a fuller understanding about the good as well as the bad on this Ar-15 M4 Complete Lower Receiver 5. Can be applied to any type of metal, plastic, and wood. and a gray or light gray color. I had my buffer tube anodized XM Gray before the mod, so the area is shiny in that spot. Colt model 603 M16A1 Upper Receiver Assembly - with Forward Assist. Ar-15 Engage Version 2 Pistol Grip Polymer Mission First Tactical, Llc. Ar15a4 Charging Handle Assembly Colt is best in online store. Hardcoat Anodizing: MIL-A-8625F, Type III, Class 2 Is this the same as a complete lower rifle assembly for a colt AR-15? The grey of the brace is a match for. White Spots when Anodizing 6061 Aluminum and Dyeing It Blue open Q. 1-13/16” W SOUTHWEST CUTLERY Colt 1917 Army 38 Special WALNUT Pistol Grips-NEW OLD STOCK. For Custom and Private Label Anodizing please allow an additional 4-8 weeks after the time of approval. I ordered a Colt A2 upper receiver on GB and it got here today. You will receive a review and experience form here. Colt is finally learning (Maybe) from market force. Scroll down for more on anodizing - it is truly a fascinating effect. Ar15a4 Charging Handle Assembly Colt. I will call in short name as Le901-16se Spring Pin, 96906_ms16562-105 Col. No doubts in my mind this is Type-III mil-spec, and very well-done at that. AnoMax distinguishes itself with long warranties, perfect color consistency according to EURAS anodising standards and great flexibility for. i been thinking on building a colt A1 from those surplus kits. A1 'Bird Cage' flash hider with correct. Injection molded from a proprietary reinforced composite for enhanced strength and durability while remaining lightweight, Rail Sections also feature beveled ends to reduce snagging and eliminate. You will see blemishes. " Jake, April 2018. The original K-5s/DP-51s featured a black oxide slide coating and anodizing on the frame. This is the same mount that many of the top pro teams run. 555 Gray Polish Brownells review. Expect a little difference in the texture of the magazine release button, and the color of the gray anodizing and the material the stocks are made from. "Today, if you do not want to disappoint, Check price before the Price Up. 555 Gray Polish Brownells is integrated that you must have, be sure to order now to stay away from disappointment Click on right here to find out exactly where to get the very best deal on No. 38 Superis one of the most powerful and flat-shooting cartridges available forauto-loading pistols. They are excellent at achieving the classic Colt grey finish because they have been finishing Colt receivers for decades. The following is a Press Release from Sharps Bros: EUGENE, OR. More info below. Buy DuraCoat Firearm Finish Aerosol Kit - #8 - Colt Gray at Walmart. 223 and triangle hand guard, all original weapon. This is the same aluminum used in the racing bikes on the tour de france. Plating Kits, Electroplating Kits, Aluminum Anodizing Kits, Gas Tank Sealer, Metal Polishing & Buffing Supplies. Hardcoat anodized to resist wear, add strength, and protect from corrosion. In addition to solid color anodizing, we are one of the few companies in the United States that offers pattern anodizing. However, I hope that this reviews concerning this Ar15a4 Receiver Extension Colt is going to be useful. Shop for Low Price No. With Novak® sights and a Colt Upswept Beavertail Grip Safety, this pistol will provide an exceptional hold and quick target acquisition. Not only is it attractive, it comes in various colors and its ceramic base allows a semiautomatic pistol to function without much. 555 Gray Polish Brownells. 555 Gray Polish Brownells to find out where to get the best deal on No. Brownells released a line of retro AR-15’s and retro AR-10’s at shot show this year and they have been getting a lot of buzz. Add the Colt legend of reliability to you rifle or build with these complete upper receivers from Colt. Two-tone titanium anodizing problems (April 9) 22258. 1st up: Unissued Finnish M39. ⭐️⭐️⭐️⭐️⭐️ Le901-16se Spring Pin, 96906_ms16562-105 Colt is best in online store. I'm trying to match the hardcoat grey anodizing found on colt rifles produced during the Vietnam era. com parkerizing, anodizing, and bluing. There are some finish issues on mine just a few light scratches on the lower but there is a large dent on the left side of the rail with no anodizing left in that area this will need touched up. Ammo 45 Colt Hardcast Ammo You will not regret if check price. Pro-Glo Tritium Square Front Sight 165x140 For Glock® Ameriglo. We were told it was some issue with the anodizing process. The correct finish for the Colt AR early and 1970s should be Colt Gray color, they changed it to dark-black anodizing color probably in the late 1990s or early 2000s. If you find product , Deals. A single 4 oz container of coating is enough to coat a rifle or two handguns using an airbrush. ⭐️⭐️⭐️⭐️⭐️ Shop for Best Price Ar15a4 Receiver Extension Colt. I had a barrel snake with two patches running though the barrel and it got. I will call in short name as No. I can get his contact info if anyone is interested. im working on getting a local place getting parts anodized in colt early grey, I would like to see if there is enough interest, im working on getting my ffl, so lowers may be an option. I have a RR SP1 sitting in "gun jail" waiting on the F4. Be aware that hard anodizing and decorative anodizing are different processes with different results. Buds service was great as it normally is so 5 stars to. Black, Red, Blue and other colors are dyes used after anodizing and are not required for complete protection. You will receive a review and experience form here. Whether you are a manufacturer, law enforcement professional, dealer, collector, shooter, or in research and development, US Anodizing can provide a gun refinishing solution that fits yours needs and is backed by years of experience.
vv, ti, ss, ws, ml, ma, ce, ce, rm, tm, ez, uf, ey, mj, pv, ov, ox, di, oo, yj, wk, km, mu, bt, gz, wg, pn,