Quote:
Originally Posted by red-beard
I picked up a 7.62 x 39 upper for my next build. I need to make sure the receivers are marked for the ammo they take. Like the Britts did to the American Enfields in WW2.
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I've solved that issue by selling my last 223 upper - all I have left on ARs at the moment are 9mm and 762x39 ....
Prior I kept them easily separated because each upper is vastly different - 223 was "standard", 762x39s have side chargers on the receiver (FAL style), and the 9mm is a pistol barrel w/ forward charging (HK style)
Next thing for ARs and me is a Form-1 SBR tax stamp, then sell off pistol lower, and then maybe get one of the no-buffer-tube-needed Foxtrot Mike 223 uppers