BCM Upper Receiver M4 Flat Top Complete (Unassembled) DEMO

Out of stock
as of 04/19/2024 3:11AM CST
Store Inventory
Available OnlineOut of stock
Fountain Valley, CAOut of stock
The Colony, TXOut of stock

Inter-Store Transfer

If this item is out of stock at your local RifleGear but available at our other location, no problem. Just place your order and select In-Store Pickup as the shipping method. As long as the item is legal in your location, we will transfer the item for you. You will be notified by email once your item has arrived at the destination.

DEMO BCM M4 stripped forged upper receiver with M4 feedramps, Built to the correct Mil-Specs. These upper receivers are blemished, however are in fully functional, working order. Includes forward assist and port door assembly, however it must be installed by the end user.

THESE ARE USED/DEMO UPPER RECEIVER ASSEMBLIES FROM BCM. All will have several nicks, scratches, and marks on exterior finish. NO HANDPICKING.

Note: 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.

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

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.


Customer Reviews

(1.00)stars out of 5
# of Ratings: 2
1. on 1/13/2023, said:
1 stars out of 5
Absolute trash. I bought one with the forward assist port entering the receiver had a piece of metal about an 1/4" patruding into the receiver. Part of it broke off as I put my finger on it. Rifle gear wouldn't exchange it or give me my money back because I installed the forward assist. Got ripped off $100.
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2. on 5/14/2021, said:
1 stars out of 5
Absolute trash.. I dont know whats going on here but I bought this upper from Rifle Gear along with everything needed to build an m4 upper. Paid Rifle G÷ar to assemble the upper. I've tried 5 different charging handles and they all jam in the chamber. Cant see any visible defects but its not me. Even tried the BCM ambi mod 3X3 handle, still jams. This is worse than disappointing and would totally not expect this from BCM. DO NOT BUY. They calls these demo's... thats a lie. These are defects. Not only that, it was dirty as hell inside, like it was used. I repeat, do NOT buy
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