Standard Mass 5.56 x 45(223) M16 Carrier only w/ Adjustable Key
4 in stock (can be backordered)
Made from 8620 steel With billet adjustable gas key side staked
RCA patented pending adjustable gas system.
Adjust gas at the carrier to avoid the need for changing your gas block.
Includes: Directions, 3 1/8 screws and 2 3/16 set screws and wrench included to make necessary adjustments.