Bear Creek Arsenal 5.56 M4 Mid-Length Barrel - 16"

SKU: B556MM41617-P
MPN: 1343-B556MM41617-P
Manufactured by Bear Creek Arsenal
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NOTE: Limit 2 per household. Quantities exceeding 2 will not allow checkout.


Out of Stock


This high quality Bear Creek Arsenal barrel goes through its entire production life in Sanford, North Carolina at Bear Creek's facilities. Drilling, reaming, rifling, and turning are all accomplished on their CNC machines under ISO-9002 Quality Systems, allowing Bear Creek to put every barrel through a 100% inspection and air gauging process, ensuring every individual barrel is flawless before it leaves their facilities.

  • Machined from 41V50 Chromoly Vanadium Steel
  • 16" length with M4 profile
  • 1:7 twist rate and mid-length gas system
  • Parkerized finish
  • Chambered in 5.56

This 16", 1:7 twist, M4 contour barrel is machined from 41V50 chromoly vanadium steel, heat treated to RC 28-32 hardness, and properly stress relieved with a durable parkerized finish. Chambered for 5.56 NATO, BCA expects that it, along with any of their barrels 16" or longer, will hold a 1.000 MOA group at 100 yards when used with appropriate ammo and shooting techniques.


Barrel CoatingParkerized
Barrel ContourM4
Barrel Length16
Barrel LiningParkerized
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandBear Creek Arsenal
Caliber Gauge5.56 NATO
Feed RampsM4
Gas Seat Diameter.750
Gas System LengthMid-Length
Thread Pattern1/2 X 28
Twist Rate1:7

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

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Nice barrel

by -

Nice lookin barrel, machined well, great 24 hour price, couldn't pass up. Extremely fast shipping.