The fire control is a BRP semi auto grip stick. I had to trim the hammer and disconnector slightly. The bolt and carrier i modified using using BRP and Robert MFG parts. Using a one piece firing pin and drilled out the wedge.
The firing pin seemed to protrude from the bolt face slightly so im wondering if i need to knock a few thousandths off somewhere. The whole conversion was easy and smooth. I did not use their roller bearing / pin assembly. I drilled and re used the original stud that controls all the belt feeding gizmos. I destroyed too many carbide mills and reamers trying to enlarge the hole in the carrier.
Hits on the primer are dead center and solid
I have some pics and a vid on my IG page @ajsarms but ill get more up on here