I've had this upper for a couple of years now, 16" mid-length light weight hammer forged, BCM BCA.. Love it. It came with a Gunfighter mod 0 compensator. The rest of the rifle is an Anderson lower with a PSA parts kit, standard carbine buffer and spring and all Magpul MOE furniture. The thing always ran like a scalded dog. Lately I have gotten bit by the suppressor bug. I ordered a YHM Titanium .30 ULT. While waiting on Uncle Sam to do his thing, I started gathering the quick connect mounts for it to go on various rifles.
Last night, the Gunfighter Mod 0 came off and a YHM quick connect Phantom Flash hider went on in its place. Took it shooting today and it is now short stroking. Tried various ammo and magazines all with the same results. If you put a death grip on it and don't let it move, it will run through the whole mag without fail. As soon as you give it a little wiggle room, it fails to eject and/or feed.
I'm pretty sure the Gunfighter Mod0s construction causes it to create back pressure, which allowed the rifle to run properly. Once it was removed and the YHM Phantom, whos construction being very open doesn't have a hope of creating any back pressure, it now seems to be under gassed.
Is there anything short of having the gas port opened up going to fix it?
I'm sure putting the suppressor on when it comes will make it run, but I really don't want to HAVE to have it on to run.
Thanks for any help!