Once You Go 300 Blackout

[ray1970]

I can't see how it could lock the bolt back when there are still rounds in the magazine. The magazine follower is what locks the bolt when the mag is empty. With rounds still in the magazine (even shifted forward) the follower is too low to catch the bolt.

I'm thinking you might have other issues.

That isn't a 20 round pmag, is it? I had some feed issues with those. Seems that internal rib comes up higher in the 20 rounders than the 30 rounders. It was catching the edge of the case mouth and causing feeding problems for me.

[SuperiorDG]

I can't see how it could lock the bolt back when there are still rounds in the magazine. The magazine follower is what locks the bolt when the mag is empty. With rounds still in the magazine (even shifted forward) the follower is too low to catch the bolt.

I'm thinking you might have other issues.

That isn't a 20 round pmag, is it? I had some feed issues with those. Seems that internal rib comes up higher in the 20 rounders than the 30 rounders. It was catching the edge of the case mouth and causing feeding problems for me.

See what you are saying. They are 30 round 3rd gen PMAGs