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

MSRP: $129.00
Your Price: $59.95
(You save $69.05 )
(1020 reviews) Write a Review
Machined from 7075T6 Forgings
Stock Status: In Stock

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.

1020 Reviews

  • 5
    M4 flat top

    Posted by Ben on Sep 3rd 2019

    I purchased a blem and think I found the scratch it’s was very minor and I honestly can’t even tell . Installing the barrel was challenging and required a heat gun and force . Also required a heat gun and force to get the BCM hand guard over the barrel but. End result was an absolute rock solid upper . Completely satisfied and will use again

  • 5
    Blemished receiver..what blemish

    Posted by Avery LaVoy on Aug 26th 2019

    This showed up in perfect condition, love getting BCM products especially on discount because they are quality.

  • 4
    Customer review

    Posted by Les Lewis on Aug 26th 2019

    All good here.

  • 4
    Blem upper receiver

    Posted by Arthur Waterman on Aug 26th 2019

    Purchased a blem upper receiver. It had an obvious scratch on one side which wad fine with me since this will be a hunting gun and will have added scratches eventually from the field.

  • 5
    BCM upper

    Posted by James McKinley on Aug 22nd 2019

    Very pleased

  • 5
    Demo upper receiver.

    Posted by C Coleman on Aug 20th 2019

    Item was as described. Shipping was fast, with no issues. Very good value for the cost. I plan on using BCM products as much as possible to complete this build. Thanks

  • 5
    Perfectly Functional

    Posted by Andrew Meade on Aug 20th 2019

    The only blemish on the receiver was a mark on the left hand side. Looks more like paint transfer than an error in the finish or a scratch. These do not have the BCM logo on the right hand side if you care about that. This is perfect if you plan to rattle can your gun anyway. Would buy again.

  • 5
    great product and fast shipping!

    Posted by Russell Basham on Aug 20th 2019

    Industry leading product with perfect fit and function. Excellent basis for a high class upper. readily available to consumer and fast shipping.

  • 5
    Great option.

    Posted by Jonny Bravo on Aug 20th 2019

    Used this with a BCM ELW barrel. Very tight fit which I like. Excellent performance out of it so far.