so im thinkin about pickin up a schuster plug for an old m1...surplus ammo being hard to find these days.... so i go to midway and they got a 4 port and a two port...
besides the obvious whats the diffrence??? is there somthing i should know???
diffrence in preformance or is it looks? fit or threads?
they both say gen 4 with a second set screw...
thanks in advance!!!
besides the obvious whats the diffrence??? is there somthing i should know???
diffrence in preformance or is it looks? fit or threads?

they both say gen 4 with a second set screw...
thanks in advance!!!
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