Well, I am picking up a blowback bolt and EOD magwell from another member, so I will have those 2 parts for a blowback, but I still intend to do a gas op. I guess I'll just do both. Maybe a blowback pistol, and a gas op carbine or SBR.
The big issue now is barrel selection. I know the .311 blank from GM is not optimum for accuracy, but I'm not looking for perfection. I truly can't envision me using these for anything much beyond 50 yards. If I can keep a 6 inch group at 50 yards, that is perfectly acceptable to me. Would the .311 bore acheive this?