Due to the MK12's extended .750" profile forward of the gas block, significant marring of any paint/Cerakote/finish will occur from installation/removal of the gas block (whether pinned or set screw), no matter the finish (as the original MK12's were.)
PINNED AND CERAKOTED OPTION AVAILABLE HERE
These are Crane Spec. MK12 barrels. These barrels are the result of tens of thousands of dollars in development done by the U.S. government to give our Special Operations guys the best weapon system they can have. We have spoken with many riflemen who have used these barrels and carried them in combat and have found unanimous satisfaction with their reliability and accuracy. Best option for long range, high precision shooting.
Specs:
Material: 416R Stainless
Barrel Extension: M4 feed ramps
Chamber: Optimized for use with MK262 (Black Hills 77gr equivalent)
Twist: 1 in 7 right hand
Contour: For use with OPS Inc.
Gas Journal: .750" with gas block alignment notch for use with out .750" or MK12 tabbed gas blocks (non-tabbed gas blocks will still work)
Gas System: 18in Rifle , 16in and 14.5 Midlength, 12.5in Carbine
Lengths: 18, 16 and 12.5in and threaded 1/2x28 for use with most common muzzle devices
Weight:
18in 2 lbs 6.3 oz
16in 2lbs 2.9oz
14.5in 2lbs
12.5in 1lb 11.5oz
Gas Port:
18in .101
16in .076
14.5in .076
12.5in .077
**THESE SERVE AS HBAR BARRELS**
*** We recommend gunsmith installation for all of our parts. We cannot warranty items damaged by improper installation.
