$450.00
11.5 Upper
- Price Negotiable?: Yes
- Phone Number: Click to view
- Condition: Used
- Listing Type: Individual
- City: American Fork
- State: Utah
- Zip/Postal Code: 84003
- Local County (e.g., Summit County): UT
- Make/Brand: BCM
- Model: M4
- Caliber: 5.56mm
- Terms: Must agree to terms
- Listed: October 21, 2026 12:10 pm
- Expires: 38 days, 4 hours

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Description
For sale is an 11.5″ upper. We built this as a demo upper with an interesting concept, still having a FSB but also utilizing a free-float M-Lok rail. It has about 2k rounds on it, headspace passes with a BCM, Colt, and SOLGW bolt.
Specs:
BCM upper
Aero Precision Atlas R-one rail
SOCOM-profile 1/7 chrome-lined/phos barrel
Obviously it’s been rattle-canned, and does not come with a charging handle, BCG, or muzzle device.
Shoots great, we just needed to move a different direction and go for something shorter. Would be great for an AR pistol or SBR.
Price is negotiable, willing to meet in or around utah valley. Cash or Venmo only, text is best. Let me know if you have any questions or want more pics/info, thanks!



