Centurion Arms 18″ 1:7 Rifle Length 6MM ARC Barrel (AR-15)

Centurion Arms 18″ 1:7 Rifle Length 6MM ARC Barrel (AR-15)


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Centurion Arms | Stockpile Defense


Centurion Arms 18″ 1:7 Rifle Length 6MM ARC Barrel (AR-15)

Precision level achieved.


*Due to the MK12 profile front end extended .750in profile forward of the gas block, significant marring of the 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.)




Material: 416R Stainless


Barrel Extension: M4 feed ramps


Chamber: 6MM ARC


Twist: 1 in 7 right hand


Contour: RECCE behind the gas block(taper from 1in down to gas block shoulder) and Mk12 profile in front of the gas block For use with OPS Inc.. Threaded 5/8-24 for use with most common muzzle devices.


Gas Journal: .750in with gas block alignment notch for use with Centurion .750in or MK12 tabbed gas blocks (non-tabbed gas blocks will still work)


Gas System: Rifle


Length: 18in


Weight: 2 lbs 6.3 oz


Gas Port: .089″


Muzzle Threads: 5/8 x 24



Centurion Barrels require no further break in. Once installed, they are ready to shoot.



Additional information

Weight 3 lbs
Dimensions 20 × 4 × 4 in


Centurion Arms

Centurion Arms | Stockpile Defense


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