BCM® M4 Upper Receiver Assembly (w/ Laser T-Markings)

MSRP: $149.00
Your Price: $129.00
(You save $20.00 )
(139 reviews)
SKU:
BCM4-UR-M4
BCM® M4 Upper Receiver Assembly (w/ Laser T-Markings)
Stock Status:

 

Life Saving Tools

BCM® M4 Upper Receiver Assembly (w/ Laser T-Markings)

Built to the correct Mil-Specs
(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.)

 

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.

***This product contains chemicals/materials known to the State of California to cause cancer and other reproductive harm. To learn more, visit www.p65warnings.ca.gov.***

139 Reviews

  • 5
    Simply the best

    This is being used for my first time build.
    90% of the parts used on this build is BCM.
    All have been first rate.. The upper and lower lock up tighter than my Colt 6920.
    If I had to actually fin something negative. I guess
    it would be, I wish it had BCM's Logo printed on it,
    Like there rifles do..

  • 5
    Customer review

    Review body is empty

  • 5
    These have the tightest bore-barrel extension fit.

    If you want to build an accurate rifle you need this upper receiver. The only ones I have ever found other then BCM that are tight fitting were Mega Arms upper receivers.

  • 5
    Upper

    Love it

  • 5
    Awesome

    Easy fast purchase with great shipping speed!

  • 5
    Upper Receiver

    Great product! Couldn’t be happier with fit and tolerance. Excellent quality!

  • 5
    M4 Upper

    everything BCM is Bad @$$, enough said

  • 5
    BCM upper

    A superior product, the slightly undersize barrel fit
    enables a proper thermal fit which greatly enhances
    accuracy and eliminates stringing.

  • 5
    Great Product

    Received the upper quickly and it was in perfect condition. Works as expected! BCM products are new for me, and I couldn't be happier with the items. Made to last, based on my use thus far, and I do not expect that to change.

    Keep up the good work!!