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  BCM 18" SS410™ Barrel with Rifle Length Gas (stripped) 1/8 Twist

BCM 18" Mk12 SS410 Barrel with Rifle Length Gas
BCM 18" Mk12 SS410 Barrel with Rifle Length Gas


 
List Price: $389.00
Our Price: $309.00

Stock Status:In Stock
Product Code: BCM-BRL-REC-18SS
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Description
 
Requires the use of the .750 gas block
Approximate Weight: 2lbs 8oz.

BCM SS410™ Barrels
This BCM stripped barrel is machined from a 410 stainless steel. It features hand lapped button rifling with a 1/8 twist rate and M4 feedramps. To give the shooter the best balance of weight and accuracy this BCM Mk12 barrel has a mid-weight profile and a rifle length gas system. (410 stainless is a harder and more corrosion resistant than the conventional 416 stainless found in most barrels.)
Requires the use of the .750 gas block.
Features
  • M4 Feed Ramp Barrel Extension
  • Rifle Length Gas System
  • 1/8 Twist Rate
  • 5.56 NATO Match Chambers (USMC SAM-R Chamber)
  • 410 Stainless Steel
  • Mid Weight Contour Profile Barrels
  • Button Rifled
  • Hand Lapped Rifling


Average Customer Review: 5 of 5 Total Reviews: 15 Write a review.

  0 of 0 people found the following review helpful:
 
MK 12 Build June 10, 2016
Reviewer: Anonymous Person from Grand Rapids, MI United States  
Used this barrel on an SPR build and after breaking it in getting consistent groups of about 3/4 MOA with a best of .684 couldn't be happier

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  3 of 3 people found the following review helpful:
 
Very accurate barrel November 11, 2015
Reviewer: Anonymous Person from middleburg, VA United States  
Finally got my build competed and dialed in.  At 105 yards and from a bench rest, 10 three-round groups averaged .6inch and the smallest was .309. I was using hand loads with 75 GR BTHP Match Hornady bullets. I believe I can still fine tune from here, but very impressed with the accuracy and cost of this barrel.

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  1 of 1 people found the following review helpful:
 
Excellent barrel September 5, 2015
Reviewer: Anonymous Person from Kingsport, TN United States  
Only had minor issue with burr on inside of barrel due to gas port drill at factory.  No worries, opened it up a few thousandths and installed SLR adjustable gas block.  Barrel is NOT overgassed, I repeat, NOT overgassed from factory with 0.98-0.100" port.  Other poster's bolt velocity is slow (cyclic rate), causing case neck damage on deflector.  Watch some high speed videos and think about it.  Switch to an H1 or H2 buffer it will help, I had same issue with H3.  Mine will not cycle unless adj block is mostly open (11-15 clicks).  As for performance, I get 4 shot groups under 1" at 100m with MK262, 5 shots opens me up over 1" but that's just with an 8.7X scope (Leupold MK 4 MR/T).  Bore is wonderfully smooth.

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  0 of 1 people found the following review helpful:
 
BCM 18" SS410 May 16, 2014
Reviewer: Dan Garcia from Tucson, AZ United States  
Bought this for an SPR build. Great quality barrel with sub MOA accuracy using Black Hills 77gr SMKs. One stated being over gassed. I never had an issue as I've always used an adjystable gas block. I'd love to get another with the ionbond coating.

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  0 of 1 people found the following review helpful:
 
Worth the wait August 19, 2013
Reviewer: William Williams from Augusta, GA United States  
I recently got this barrel to finish a SPR build that I have been gathering the parts for two years. After a function test at my local indoor range at 25 yards, I was ready for the outdoor range. I took the finished rifle to the outdoor range and was more than pleased. This gun is a 1/2 MOA or better. This is just another BCM product that is outstanding. Thanks BCM.

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AR-15 Barrel Assemblies > 18" Barrels