Home CMMG Testing the Bear Creek Arsenal 16" 6.5 Grendel M4 Profile Barrel

Testing the Bear Creek Arsenal 16" 6.5 Grendel M4 Profile Barrel

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The following is a brief look at the following Bear Creek Arsenal Barrel:

Model: 119-B6.5Cm41618(M)

Length: 16″
Caliber: 6.5 Grendel
Rifling Twist Rate: 1:8
Gas System Length: Carbine
Barrel Profile: M4
Feed Ramps: M4
Barrel Material: 4150 CMV
Finish: Melonite (Nitride)

Groups shown were shot from a concrete bench, with front and rear sandbag rests.

Range conditions:
Temperature: 82F
Wind: N/A

Barrel was cleaned before and after each range session, and completely stripped and cleaned after 2nd range session.

Because this barrel exhibited such poor accuracy, groups were shot at 50 yards instead of 100.

Build notes:

-Upper receiver was lapped and squared prior to assembly.
-Barrel was free floated.
-Barrel extension and upper receiver had a tight interference fit.
-Barrel nut was torqued and loosened 3x before final torque value of 70 ft/lbs was applied.
-Gas block was aligned properly, and taper pinned.
-Muzzle device used a crush washer, but was pre-crushed before installation so that it could be installed only 1/8th of a turn past hand tight.

Lower receiver has a polished, adjusted GI trigger that breaks cleanly at 4 lbs.

As with all videos I post, I’m not sponsored in any way by anybody or any entity. I’m just a guy who likes to test cheap barrels.

All weapons pictured are legally owned by me.
This review may not be indicative of every barrel bearing the same model. This is just my experience with this barrel.

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2 COMMENTS

  1. Good vid, i did a couple of Grendel vids on my channel. One is a bca….. we took it out to 740yrds with hornady black. Check them out if you get an hour free. All season outdoors…… thanks mike. Subbed

  2. I bought a complete 18” straight flute upper from them in 6.5 Grendel a few years ago. Mine shot worse than yours. I could not believe what I was seeing. I drove 2 hours to Sevierville Tn to get Alexander ammo in several different bullet weights. The Alexander loads did not shoot any better than the Wolf. I got nowhere with BCA when I contacted them about it. It was all my fault. Apparently I didn’t pin the upper and lower together correctly. I disassembled the upper and put the useable parts to work somewhere else.

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