All US Armed service once-fired five.56x45mm brass includes a crimped primer and a further step need to be taken to procedure the brass.223s. Make no slip-up about it–the SU16 isn’t Kel-Tec’s tackle the venerable AR-15 style, as I’ve heard some advise. Irrespective of a passing resemblance, and a standard chambering, the SU16 is intended fo