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View Full Version : AR-57 Uppers in 5.7!!


Rinodods
05-01-2008, 15:59
Check it out. Seems like a fairly cool idea if they will function correctly.

http://www.militarygunsupply.com/shop2/index.php?main_page=product_info&cPath=35&products_id=338
mightymouse
05-01-2008, 20:30
Check it out. Seems like a fairly cool idea if they will function correctly.

http://www.militarygunsupply.com/shop2/index.php?main_page=product_info&cPath=35&products_id=338

Really cool until you have to buy ammo for it. Ouch.
spqrzilla
05-03-2008, 11:25
I guess I don't get it. If I wanted a PS90, I'd buy a PS90.

What you get with a AR upper is a hybrid that lacks most of the advantages of the PS90 in terms of compactness. So you end up with something the same length as an M4 but with a less effective cartridge.