BCM Forged Upper Receiver Assembly, AR/M4
Built to the correct military specifications
(Inside Diameter for barrel extension slightly undersized for a tighter fit to the barrel and a more accurate rifle. Please use a heat gun or hair dryer to warm up threaded bore of receiver if barrel extension is too tight.)
Features:
- Precision machined to correct Mil-Specs from 7075 T6 Forgings extension, providing the user with superior strength when dropped or when mortaring malfunction clearance drills.
- 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
- As with all BCM® products, Made in the U.S.A.
Jeff W (verified owner) –
No frills upper with excellent thermal fit. I moved to this upper in the pursuit of building a precision rifle and needed no movement in the barrel extension after using a cheap BA upper. This thing is tight! I actually botched the initial alignment when heating it up and putting a cold barrel in it. I had to give it quite a bit of ooga-dooga to get the barrel to line up and fit all the way. M4 ramps lined up and she’s ready to put rounds down range!
Fast shipping and pairs really well with my SOLGW barrel and SOLGW lower
Joseph Gregg (verified owner) –
Receiver came in perfect condition! Quick shipping per usual with rooftop defense! You guys are great!
Hugh Evans (verified owner) –
Great upper, awesome service from rooftop as usual
Hugh Evans –
Great upper, uses thermo fit, paired well with a Bcm lower and always great Bcm quality