Some interesting concepts:
http://www.dtic.mil/ndia/2009infantr...ioniii8550.pdf
Some interesting concepts:
http://www.dtic.mil/ndia/2009infantr...ioniii8550.pdf
my local gun shop had some polymer cased .223 a couple years back for $4 a box of 20, but I never tried it because I could get all the brass cased ammo I wanted for the same price then reload it, and because it scared me
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