12" monster barrel and bolt

[A5BLASTER]

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

Maybe not but we will never know if he doesn't check it.

My thinking is it's something to do with the o-ring creating to much pressure when trying too work with the harder steel caseing.

If the chamber works with brass cases then it should work with steel cases as well.

The only thing I can see causing the issue is the o-ring.

It's a quick test and will either proff irs the problem are that the problem does indeed lay in the barrel.