12" monster barrel and bolt

[rabiddawg]

10/4 but yes I haven't had any failures with factory brass only with wolf steel case. And I have 2 other bolts that will not seat in the in the extension unless forced in and then it feels like you are going to break the charging handle trying to pull it back out with nothing in the chamber. And the other bolts are g2g in my bca barrel

guys see the bolder part. Removing the o-ring won’t help