Mil-Spec Heat treated and chrome lined carrier.
Note from Phase 5:
***There has been a lot of talk about the pros and cons of staking the gas key on the carrier. Here is our opinion and why we do not stake keys. The US Mil Spec. assembly drawing requires the carrier key to be staked. Contrary to some popular opinions staking does not “SEAL” the gas key. Staking keeps the screws from backing out Period.
If you do not properly torque the screws to 56 inch pounds you will be staking a screw that is loose or one that is over torqued and prone to breakage. We have seen plenty of staked screws that are loose or broken.
The Mil Spec. also calls for the gas key bottom surface to be“SEALED" with Permatex gasket sealer. Something no one does to our knowledge. Here is our procedure for installing a gas key. First clean the oil from the gas key and the mating surface on the carrier. Then clean the oil from the screw threads. We use Acetone for this. Next use a very light coating of Permatex high strength thread locker gel on the bottom of the key. PN 27010. This is much easier to use than the Permatex gasket sealer. It comes in a plastic twist dispenser. Make sure you don't use so much that it squishes into the gas port hole. The cure rate is 60 minutes. Next coat the screw threads with the same gel. Install the key and torque the screws to 56 inch pounds.
Should you decide to remove the key for some reason don't use the old screws when you put the key back on! You will most likely break them during installation or when you fire the rifle. Go to the local hardware store and buy new 10-32 x ¼"SHCS. If you feel the need to stake the screws spend the money and get one of the staking tools from Brownell that uses a screw type system to swedge the material into the top of the screw. Don't use a hammer and a punch! You can stretch the thread on the screw and now you have a loose screw that will eventually break if the gun even fires.***
If you are building a new AR-22LR from the ground up or want to permanently convert your existing AR-15, the 2a Armament 22LR Bolt Carrier & Barrel Kit is the perfect choice for a lightweight build.
Manufacturer Part Number: 2A-22BCGBAR-1No Additional Information Provided
Designed under the highest quality standards and with extreme reliability in mind, the 2A Armament AR 22LR Conversion Bolt Carrier allows you to quickly and easily convert your .223/5.56 AR-15 into a 22LR rifle. Ideal for small game and low cost target shooting, the AR 22LR Conversion Bolt Carrier weighs in at just 8.2 ounces.
Bolt Carrier Features:
Manufacturer Part Number: 2A-22CONBCG-1
The 2a Armament AR 22LR Magazines are designed for extreme reliability when paired with the 2A Armament AR 22LR Conversion Bolt Carrier.
Manufacturer Part Number: 2A-22LRM10S-1; 2A-22LRM15S-1; 2A-22LRM25S-1
The 2A Armament™ AR-15 Steel takedown pin set features the same classic through drilled design as our popular Titanium takedown pins but with a black oxide finish to accommodate for personal preference. These pins are made from U.S.A. sourced 4140 steel and weigh in at 0.38 oz total for both pins combined. The 2A Armament takedown pins are aesthetically pleasing on both our BALIOS and BALIOS-LITE line of receiver sets, as well as other vendors product.
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