Best short stroke piston system with the best warranty. - Adams Arms Standard Picatinny Block Piston Kit

I've owned an AA conversion since it's birth to the public. I recently upgraded my original pistol length 10" to a carbine length 10" barrel. I wanted a little more hand guard realestate for mounting accessories (Samson Evolution). Best decision I could have made. Runs like a champ. My last trip to the range had shooters extremely impressed by how quite the system ran with a suppressor. Even with a 10" barrel, this system enhanced the sound suppression capabilities with supersonic ammo. I have used almost every retrofit piston system that has been available on the market. Some good and some bad. Some you cant find anymore. But AA is always my first choice. The reliability, design simplicity, price point, warranty..... did I mention reliability? Second to none in regards to short stroke conversions. I have actually changed the religion of some of my DI enthusiast friends. After witnessing how clean, cool, and reliable AA actually is, and how my suppressed 10" out performed their DI carbines and rifles at the range, they all ordered kits for their firearms. No regrets. I will never go back to DI ARs.I own 3 ARs, all with AA pistons (10" carbine 5.56, 16" midlength 5.56, and 16" pistol length 300blk).