Anyone here converted thier DI AR to a rifle length Adams Arms Piston? I have a NM DCM 1-8 twist service rifle barrel lying around and was thinking of setting it up as a SPR. I am thinking of going with a Mega Arms Monolithich upper (quadrail)maybe a DD 12.0 Lite Rail, Adams Arms Rifle length Piston set up, and put a Sure-Fire muzzle brake on the end and stick my NF 2.5-10X24 on it. Seems like this would be an awesome set up. I'm thinking of going piston because I am very impressed at how clean the bolt/carrier/upper receiver on my SR 556 is. I have the NF on the SR 556 now and is 1/2 moa accurate with Hornady 75 gr. TAP but the velocities are slow because of the 16" barrel. So if anyone is set up with a rifle length piston, I'd appreciate some input. Thanks