The M4E1 Threaded Upper Receiver features an angular machined design that helps it stand apart from standard mil-spec upper receivers. It is threaded to accept a standard AR-15 barrel nut and forged from 7075-T6 aluminum and precision machined to work with all mil-spec AR-15 parts. The M4E1 features a picatinny profile, M4 feed-ramps, and .250 take-down pin holes. NOTE: Requires dust cover, forward assist, charging handle, barrel, handguard, gas block, muzzle device, gas tube and BCG (Bolt Carrier Group) to complete.

Weight	0.6 lbs
Dimensions	8.6 × 3.5 × 3.4 in
Sights	None, Optic Ready
Caliber	5.56x45mm NATO
Receiver Finish	Black Anodized
Receiver Description	7075-T6 Aluminum
Manufacturer	Aero Precision

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Aero Precision APAR700201C M4E1 Threaded Receiver 5.56x45mm NATO 7075-T6 Aluminum Black Anodized Receiver for AR-15

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