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Any regular gas black with the correct journal diameter can be used, but the Centurion gas blocks have the alignment tab to ensure correct alignment during installation. You would be able to use the PRI flip up sight gas block.
The MK12 Barrel is a top notch machined part. It will make your rifle a hole puncher. I seriously cannot recommend this barrel anymore except it is awesome and above all expectations. Centurion arms makes a specific gas block that tabs into a machine...
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The machining and finish on these barrels is excellent. Had they been packaged and stored properly they would have probably been excellent barrels. I ordered 3 of these, and on inspection 2 of the 3 had noticeable rusting at the muzzle ends of the ri...
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Product Info for Centurion Arms MK 12 Threaded Rifle Barrel
Centurion Arms MK12 Rifle Barrels are the result of development done by the U.S. government to give Special Operations forces the best possible weapon system. Troops who have carried these AR15 Barrels from Centurion Arms give them high marks for reliability and accuracy. Centurion Arms MK12 Crane Spec. Rifle Barrels are manufactured from 416R stainless steel with a stainless finish. Get special ops quality when you upgrade to the Centurion Arms MK12 18 inch Rifle Barrel.
Specifications for Centurion Arms MK 12 Threaded Rifle Barrel:
Manufacturer:
Centurion Arms
Color:
Stainless
Finish:
Stainless
Fabric/Material:
416R Stainless Steel
Barrel Length:
18 in
Barrel Profile:
MK12
Gas System Length:
Rifle Length
Threads per Inch:
1/2x28
Barrel Twist Rate:
1-7
Barrel Material:
416R Stainless Steel
Gun Make:
Century Arms
Weight:
2.4 oz, 2.4 lb
Condition:
New
Features of Centurion Arms MK 12 Threaded Rifle Barrel:
Barrel Extension: M4 Feed Ramps
Chamber: Optimized for use with MK262 (Black Hills 77gr equivalent)
Contour: for use with OPS inc.
Centurion Arms barrels serve as HBAR barrels
Centurion Arms barrels require no further break in