Description
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.)
Features
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.
Find more Uppers Bravo Company for sale gun parts.Comments (18)
Not positive, I could be wrong, but if not mistaken, more companies decided to cease certain sales to CA residents. I wonder why 8-(|)
Yes, you are correct. As of Jan 1 2026, new gun control laws went into effect in CA and now includes almost all gun parts. The new laws don't ban the sale of parts delivered directly to residents, but now sellers must get a copy of the CA resident's drivers license, sign a form with a bunch of questions, and items be sent "signature required". Basically, the anti 2A CA legislators again making it more difficult to buy parts online, encouraging some sellers not wanting to bother with CA anymore. In some way I don't blame them (sellers), but even with all the CA restrictions, the CA market is one of the largest in the country, so most sellers are willing to put up with the extra requirements.
CZ, New England states are getting just as bad or worse in my opinion. Check out what Fetterman said about the Democrat-run state of Maine recently. He is a Democrat but has common sense IMHO. 8-(|)
Here they go, jacking up their prices AGAIN. Was $49.95 for months, now $59.95. Also, for you California residents: They won't sell ANYTHING to CA residents anymore, since Jan. 2026. Even though most sellers will still sell to CA, needing just a copy of you CDL, signature on a form and for delivery, BCM decided to cease ALL sales to CA residents. Very disappointed in BCM due to their big increase in prices over the last year or so, and this new exclusion policy. Not quite the value company they used to be.
Received mine last week. Great quality and couldn’t find a blemish
Shipping was under $10 to get 3 to MI. That's amazing in 2026.
Purchased 2. Transaction was smooth and shipping was reasonable.
I ordered 5x that just got delivered. None have any major defects. Slight uneven finish on them but no big deal. Did not test for thermal fit yet as I do not have any unused barrels sitting around.
I ordered a couple last week and both had the star forge markings. That's not always the case, and they were in pretty nice condition. Hard to beat for the price
I have one with a scratch that is through the finish. Still worth the money for me since I use my guns.
This is not a sale price. If you don't need an upper asap, just wait for the price to drop back down to $49.95. I've bought 4 of of these BCM demo uppers, no noticeable blemish. If you think about it, after assembling your AR15, it immediately becomes "used", and after a few trips to the range, it definitely can be considered blemish. I think selling " demo or blemish" parts is just a way for vendors to get rid of excess inventory and raise cash without devaluing the normal price (MSRP).
Thing is, the price IS currently $49. The gun.deals listing is bugged or something.
To add to your point though, these sometimes drop to $39.
These are very high quality, just be aware the barrel extension has to be fit by thermal expansion, it will not fit the receiver without heat applied.
Sign of a high quality part imo, I used a heat gun and my Ballistic Advantage slid right in. Gun shot flawlessly last week!
Mine fit without heat with no issues.
Mikeroofer, 47iSaFeLoN other name 47iSaPEDO if I’m not mistaken. I haven’t seen you guys around hope you're all okay. 8-(|)