BCM M4 Upper Receiver Assembly

Out of stock

BCM M4 Upper Receiver Assembly

Special Price $113.00 Regular Price $119.00

Build to the correct Mil-Specs.
(Inside Diameter for barrel extension slightly undersized for a tighter fit to the barrel and a more accurate rifle.)


  • Precision machined to correct Mil-Specs from 7075 T6 Forgings

  • Fully Assembled with forward assist, and ejection port cover

  • Mil-Std 1913 Rail for mounting optics and accessories

  • Machined for use with barrels that use an M4 barrel extension

  • Laser etched T-markings for addressing the remounting of optics

  • Includes Mil-Spec Forward Assist with heat treated tool steel pawl, with press fit and pinned cap

  • Hard Coat Anodized per Mil-A-8625F, Type III, Class2

  • Dry Film Lube on interior bore per Mil-Specs

  • Made in the U.S.A.

This product will not include the BCM logo etched on the receiver. It is marked BCM over the gas tube hole.

More Information
Manufacturer Bravo Company MFG
Finish Black
Barrel Length 20"
Caliber 5.56
Configuration .875 DIA
Option AR15
Gas Length Mid
Height No
Rail Length 10"
Mount KeyMod
Profile Standard
Reticle No
Co Witness No
Size 35mm rings
Item Category (only for Taxify) No