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6/21/2014 9:20:44 PM EDT
So I have a DPMS lower and a lower parts kit from CMMG and i have 4 PMags, 3 gen2 and one gen3, only one of the gen2 mags on the last round will actually be pushed up by the follower. I cant tell if this is a mag problem or if its from my bolt catch, all the mags seem to be identical and i can get them to seat correctly occasionally. I don't know if i just happened to get 3 bad mags or if i should get a different LPK or Bolt catch, or if some how my lower is out of spec, i do know that my current bolt catch measures .438inchs and i know that a standard USGI mag will work, id just prefer to be able to use my current PMags. Please any help would be appreciated.
6/22/2014 5:04:21 AM EDT
[#1]
Quoted:
So I have a DPMS lower and a lower parts kit from CMMG and i have 4 PMags, 3 gen2 and one gen3, only one of the gen2 mags on the last round will actually be pushed up by the follower. I cant tell if this is a mag problem or if its from my bolt catch, all the mags seem to be identical and i can get them to seat correctly occasionally. I don't know if i just happened to get 3 bad mags or if i should get a different LPK or Bolt catch, or if some how my lower is out of spec, i do know that my current bolt catch measures .438inchs and i know that a standard USGI mag will work, id just prefer to be able to use my current PMags. Please any help would be appreciated.
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Pictures for visually clarity of bolt catch and mags, and tell us more for comprehension.

So is the last round getting stuck in the mag and not being loaded or just jammed in the mag.

Is a potential mag catch issue or the slot on the mag is off, or you need to assert more force by giving it a better seating whack.

If the bolt/bcg being held back on the last shot fired?
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