CMMG Mk9LE M4 AR-15 Upper Group 9mm 16" Barrel 1:10 Twist A2 Front Sight Black 90B1AA2

CMMG, Inc.
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CMMG is a leading manufacturer of firearm related accessories. CMMG's commitment to quality and creating product at the best value; this complete upper receiver is designed to connect seamlessly with the lower.

Features and Specifications:
Manufacturer Number: 90B1AA2
9mm M4 Upper.
Mil-Spec A3 Receiver.
4140 W.A.S.P. (Weapon Armament Surface Protection) Barrel with 1:10 twist.
Ramped 9mm Bolt uses a standard AR-15 or M16 hammer.
Do not use with the dedicated 9mm hammer.
"F" marked front sight.

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Item#: ARR-118-043