Just wanted to give my 2 cents on the Adams Arms Piston kit I recently installed on my sbr rifle.
I only put 40 rounds through on this initial trial, but I will update in the coming week on further tests. I used a Noveske with a 10.5 in barrel and a new Troy polymer mag.
1. Kit was a cinch to install
2. Fit and finish is great
3. First round fired perfectly but 2nd round fed but the bolt didn't lock up and the firing pin just bumped the primer so it didn't fire.
4. I ejected the cartridge and reloaded into the magazine and re-fired with no problems
5. 38 more rounds fired perfectly, alternating between single shots and rapid 3 and 4 round shots.

Overall I am very satisfied so far. Not sure as to why I had the malfunction on the 2nd round. The Troy magazine was brand new so maybe that had something to do with it.

More to come.