RUK-15 4.5 Inch A4 Upper Half
1 item
5.56mm NATO chamber for 5.56mm and .223 caliber
RUK-15 4.5 Inch A4 Upper Half .223/5.56mm
AR0369B With RRA Lightweight Free Float Rail, M-LOK® Compatible
1 item
5.56mm NATO chamber for 5.56mm and .223 caliber