20rd PMAG Problem

[Mark K]

Just got several new PMAGs, two 30rd and a 20rd. The 20 rounder will cycle the first 15 just fine, then tries to double feed 2 rounds, and then will not even pick up the last 3 rounds.

Ideas?

Mark K

[rexican]

does it only happen when you load it to capacity? Can you load 6 rounds and replicate the failure?

I was just thinking a burr on the spine that is in the front of the mag could cause a malfunction at a specific point. It does not necessarily explain the double feeding, but I'm curious.

If for some reason you can't resolve it, I'll offer to trade you a working, unmodified 20 round pmag for your malfunctioning one.

I have to modify 20 rounders pretty extensively for my 450 bushmaster (removing the front spine altogether and threading nylon screws into the follower to take up the lost space) and they still run perfectly...

[technetium-99m]

I bet Magpul will send you a new one.

I say let them have it back.

[Mark K]

does it only happen when you load it to capacity? Can you load 6 rounds and replicate the failure?

I was just thinking a burr on the spine that is in the front of the mag could cause a malfunction at a specific point. It does not necessarily explain the double feeding, but I'm curious.

If for some reason you can't resolve it, I'll offer to trade you a working, unmodified 20 round pmag for your malfunctioning one.

I have to modify 20 rounders pretty extensively for my 450 bushmaster (removing the front spine altogether and threading nylon screws into the follower to take up the lost space) and they still run perfectly...

Been raining here, so when it lets up, I will actually function fire test and let you know. Thanks for the exchange offer.

[Mark K]

Well, finally got some testing in, and when actually shooting, the mag works just fine.

Thanks all,

Mark K.