Rock River Arms 4.5" A4 AR-15 Upper, 223/556, BCG, M-Lok Rail

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$549.00

4.5 INCH A4 UPPER HALF .223/5.56MM - WITH RRA LIGHTWEIGHT FREE FLOAT RAIL, M-LOK® COMPATIBLE

ALL NFA RULES APPLY.

CALIBER : 5.56MM NATO CHAMBER FOR 5.56MM AND .223 CALIBER
UPPER RECEIVER : FORGED A4
GAS BLOCK : LOW PROFILE GAS BLOCK
MUZZLE DEVICE : SMITH VORTEX FLASH SUPPRESSOR / 1/2–28 THREAD
HANDGUARD : RRA LIGHTWEIGHT ALUMINUM FREE FLOAT, 4.25 INCH PISTOL LENGTH, M-LOK COMPATIBLE
INCLUDES : BOLT CARRIER GROUP, CHARGING HANDLE ASSEMBLY AND LOW PRO M-LOK® COMPATIBLE HANDSTOP
NOTE : ALL NFA RULES APPLY.

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