The m4e1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself.It is machined from 7075-t6 aluminum with, m4 feedramps,.250 takedown pin holes, and supports barrels with a diameter up to 1".Included is a barrel nut and wrench, port door, and forward assist.Note: this upper is not piston-kit compatible.Requires charging handle, barrel, handguard, gas block, muzzle device, gas tube and bcg (bolt carrier group) to complete.
Receiver Finish: Black Anodized
Type: Semi-Complete
Caliber: 5.56x45mm NATO
Sights: None, Optic Ready
Receiver Description: 7075-T6 Aluminum
Handguards: Free-Floating
Handguard Finish: Black Hard Coat Anodized
Receiver Finish: Black Anodized
Type: Semi-Complete
Caliber: 5.56x45mm NATO
Sights: None, Optic Ready
Receiver Description: 7075-T6 Aluminum
Handguards: Free-Floating
Handguard Finish: Black Hard Coat Anodized
