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This upper features a 1913 top rail, M4 feed ramp

Hard-coat anodized to MIL-A-8625 type III class 2

Precision machined to mil-spec from a 7075 T6 aluminum forging.

Ejection port cover, rod, spring, and c-clip are installed along with forward assist, spring, and pin.
Forging marks may vary

No machined or painted t-marks.

Made in USA