18" 5.56 SPR Rifle Length AR 15 Barrel w/ Ops 12, Performance Series
This 5.56 chambered 18 inch Performance Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish. Performance Series barrels feature a FailZero Nickel Boron Coated Extended M4 Feed Ramp Extension.
This barrel features a longer .750” profile dimension necessary for proper installation of the OPS Inc 12th model collar and suppressor.
|Material||4150 Chrome Moly Vanadium|
|Finish||QPQ Corrosion Resistant|
|Gas System Length||Rifle|
|Gas Block Journal||.750"|
|Twist Rate||1:7 inches|
|Other Info||HP and MPI Tested|