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6mm arc gas gun bolt lock back
- Thread starter Marksman LLC
- Start date
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TRG65
Well-Known Member
- Joined
- Dec 21, 2017
- Messages
- 454
I had a lot of problems with my 6 ARC. To get things to consistently run, I went to a full mass carrier, H2 buffer and Tubbs recoil spring, but I wouldn't get lock back. I switched uppers to a Seekins because I found I was getting a .3 mil shift between barricade and bipod shooting and then the same load would lock back. I had run the prior upper/lower combination as a 223 and never had a problem with lock back.
