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Almost all AR-15 uppers are interchangeable. Put matching barrel & bolt & there you have it, grendel, beowolf,5.56, whatever.
Lots more to learn, isn't there?
Almost all AR-15 uppers are interchangeable. Put matching barrel & bolt & there you have it, grendel, beowolf,5.56, whatever.
Lots more to learn, isn't there?
SUPPOSEDLY you can alter the lips and replace the follower. Supposedly you are supposed to replace the spring with a tougher spring, but I have heard others use it just fine...
SUPPOSEDLY you can alter the lips and replace the follower. Supposedly you are supposed to replace the spring with a tougher spring, but I have heard others use it just fine...
So in your opinion, would it be fine if I altered a magpul 30 round pmag to 6.5 without changing the spring?
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