Bear Creek Arsenal 16" 5.56 M4 Complete Upper - 15" M-LOK Rail
This Bear Creek Arsenal complete upper receiver, like all of Bear Creek's products, is fully designed and made in the United States of America. This allows Bear Creek to put every upper through numerous QA/QC checks, including test firing prior to approval and shipment. Thanks to this rigorous testing, this complete upper is backed by Bear Creek Arsenal's limited lifetime warranty!
This 16" complete upper is chambered for 5.56 NATO and features Bear Creek's exceptional 41V50 Chrome Molt Vanadium steel barrel with a soft shooting mid-length gas system. The 1:7 twist will ensure even the heaviest 5.56 rounds will stabilize, perfect for use with popular 77-grain OTMs. Both the barrel and M16-cut bolt carrier group have a durable parkerized finish. The high quality bolt carrier group has been high-pressure tested and magnetic particle inspected so you can be 100% assured of no material defects!
This complete upper has been topped off with a 15" free float M-LOK handguard, improving airflow and allowing for improved accuracy. The extended handguard provides plenty of room for your favorite accessories and enhanced ergonomics!
- 16" 41V50 Chrome Moly Vanadium Steel barrel with M4 contour, Mid-Length gas system, and Parkerized finish.
- 1/2x28 Thread Pitch with a 1:7 Twist Rate
- Parkerized M16 cut Bolt Carrier Group is high pressure tested and magnetic particle inspected.
- Ships with A2 Flash Hider
- 15" free float M-LOK rail.
- Made in Sanford, North Carolina.
Ratings & Reviews
by R Dubb -
Picked one of these uppers up when on sale. Primary arms shipped it quickly and I received it within a few days. Mounted this to my home build 80% lower with no fitment issues or slop. Test fired 100 rounds using IMI 62 grain FMJ ammo with both Magpul and Hexmag magazines and did not experience even one misfeed, cycling or ejection issues. I would not hesitate to purchase another even if not on sale! I only wish Bear Creek Arsenal would make these with FDE or even OD rails.
by Justin -
Purchased 2 of these uppers. No issues at all, highly recommend.
by Shane -
I ordered this upper yesterday and received it today. FAST shipping. Now I do live in Louisiana and they are from Texas. With that said, it gets a 3 star from me bc you DO NOT receive the rail that is in the picture. I really liked the rail that is pictured and I got a standard 15 in rail with picitiny running the length of the rail on top.