BCM® Upper Receiver - M4 Flat Top (M4 Feedramps) Complete (Unassembled) - DEMO/Scratched

MSRP: $129.00
Your Price: $89.95
(You save $39.05 )
(1381 reviews) Write a Review
Maximum Purchase:
10 units
Machined from 7075T6 Forgings
Stock Status:

BCM® M4 Flat Top Upper Receiver with cosmetic blemishes. Most have scratches or scuffs.
The upper comes unassembled, but complete with BCM forward assist assembly and ejection port cover door assembly.
You must assemble it. (Assembly required) (all parts, but you will have to assemble together)
THESE ARE USED/DEMO UPPER RECEIVER ASSEMBLIES. All will have several nicks, scratches, and marks on exterior finish. NO HANDPICKING.
This receiver has the M4 feedramps machined in. This is to be used with barrels that include the M4 barrel extension.

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
NOT 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. (of course)

This product will not include the BCM® logo laser etched on the receiver. It is marked BCM4 over the gas tube hole.

***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.***

1381 Reviews

  • 5
    Really quality Upper Receiver

    If your looking for an upper receiver that you don’t need to look all flashy but want something 100% milspec with a tight fit for your barrel this is the way to go. For $89 you can’t get anything better than a BCM Upper. Highly recommend.

  • 5
    Blem Stripped upper

    Showed up and I couldn’t find a blemish on it and I was stoked to finally have a bcm upper. It’s worked great and couldn’t be happier.

  • 5
    Blem Upper Reciever

    Excellent product. Small barely noticeable scratch on right side by carrying handle notch. Fully functionable.

  • 5
    BCM stripped upper receiver

    This "blemished" upper receiver is 99.5% perfect! The only way to know it's a "blemished" upper is the fact that it dies not have the "BCM" laser etch on the top of the receiver. Well worth the money and fits my ground up build perfectly!

  • 5
    Excellent quality

    Happy customer, as usual

  • 4
    Nearly Perfect!

    Great product. I default to these upper receivers due to the great price, and overall good condition for almost every build I do. The subject of this review is "Nearly Perfect" because the only complaint I have, and the only thing I would ask BCM to change is their supplier to get rid of the weird star inside the square forge mark. Other than that, these upper receivers are spectacular!

  • 5

    Very good upper

  • 5
    Upper Receiver

    Even though it is a demo/scratch unit, it really is in perfect shape and the blemishes are not noticeable.

  • 5
    m4 upper

    top notch with flawless fit.