12-05-2017, 07:40 PM
So I bought a model 1 sales upper receiver used from the internet and it shot factory ammo extremely well, its been really struggling with reloads though. I know that I have a type 1 bolt, it measures 0.125 and it says 7.62x39 on the side.
Where my question develops is...can I replace my 0.125 bolt with a 0.136 bolt or do I need to send the barrel to get the chamber redesigned and then buy a new 0.136 bolt...?
Where my question develops is...can I replace my 0.125 bolt with a 0.136 bolt or do I need to send the barrel to get the chamber redesigned and then buy a new 0.136 bolt...?