ADAMS ARMS’ Gas Piston Conversion Kit

Adams Arms' "AR15 Fix" is a revolutionary new Retro-Fit Piston…


Adams Arms’ “AR15 Fix” is a revolutionary new Retro-Fit Piston Driven Cycling System for the AR15/M-16 rifle. Adams Arms piston driven systems replace the problematic impingement system currently associated with the mil-spec Ar15, m16 style rifles.

* Faster target acquisition
* Completely eliminates hot gases from entering the receiver
* Lowers recoil 30 to 40 percent by using a short stroke shaft
* Improves accuracy by lowering recoil
* Makes the weapon more reliable over a longer term of use
* Easy access from front of block with out removing hand guard

Look for more on Adams Arms’ AR15 Fix in an upcoming issue of Special Weapons for Military and Police!

For more information on this and other Adams Arms products, visit

Load Comments
  • randy

    I recently had my gunsmith built me a new AR15. The gunsmith alone was great but the real surprise came from the precision craftsmanship of the upper we went with on the build. I am one that likes to keep my money in the area I live. So we decided to go with a Adams Arms Piston upper. After many range trips and a ton of ammo later. I can honestly say it was the best decision I have ever made. This is not my first AR15 but in my opinion it is the best AR I have ever owned. The Adams Arms upper and piston system has worked flawlessly under very heavy use. Cleaning the gun now is a quick and easy task due to the design of the their system and the coatings they use. I could not be happier with Adams Arms and the customer service I have received from them. I highly recommend this company if you are looking for a no hassle, quality built AR upper.

  • xrey

    It is now 2010, and I got my AA M4 kit for $249.99 + shipping so [prices has come down. It also came with a bolt carrier, so I only need to buy a firing pin group. It is going in an upper kit from DS Arms. As for HK, I’m sure it’s a winner, for thousands more. But that ammo you are using or your target won’t know you paid less.

  • Mr direct

    I recently saw the the Adams Arms kit is now being copied by Cmmg and several other flavor of the day companies.

  • Mike Z

    In a world of contracts, civilians pay a MAJOR premium for HK equipment. 416 uppers are serveral thousand dollars for private buyers. Only Uncle Sam gets them for sale price.

  • Bananahammock

    In a world of snappy comments, some suck.

  • Master Sergeant

    I installed AA on my 7.5″ SBR RRA AR. It fits great with the Samson pistol length quad rail. It is now one of the most reliable ARs I have ever fired. Tens of hundreds of rounds with out a malfunction. I cant wait for AA to produce retrofits for other AR caliburs so that I can convert my other ARs. AA has my business and trust in such a well built and simple functioning system.

  • I am the owner of the very 1st AA piston system, GB-0001A, I have subsequently built a 7.5″ piston SBR and am presently building a rifle-length Dissapator AA system. The AA system is the simplest, most durable system I have seen. Jason and Jim hae a real winner on their hands and I wish them all the success they deserve.
    If you want to see picture or read more go to

    As far s the comment “get the HK416”, why pay more for the same performance? Save your $$, buy the AA system and retro your existing AR.

  • Mark

    And in a world of money, some blow it like its water.

  • Mr Direct

    I bought one of these kits from adams arms for 499.00 put it on my RRA AR with a Daniels omega rail.
    and still came out 700.00 less than an HK416 and didnt have to wait 12 months to get it.
    4500 hundred rounds or so later and I have never had to clean my bolt carier group and the system runs unbelievable.
    Thanks Adams Arms for solving A problem that should have been taken care of Almost 50 years ago
    Mr Direct

  • The Shooter

    Get the HK416… In a world of compromise, some don’t…