6.8mm SPC A3 Upper Receiver Complete with M4 Feed Ramp - Yankee Hill
AR-15 A3 Upper Receivers laser marked with the caliber of the firearm. Made from forged 7075-T6 aluminum to Military Specs. Features extended M4 feed ramps, forward assist, "T" Markings and dust cover assembly. Plated per MIL-A-8625.
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AR15 M4 Replacement Uppers | Yankee Hill Machine |