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Our 5.56 chambered 16 inch Pencil Profile Midlength Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.
The .625” barrels are called this due to .625″ diameter at the gas block journal. This profile is a thinner and lighter weight version of the original .750".
|Material||4150 Chrome Moly Vanadium|
|Finish||QPQ Corrosion Resistant|
|Gas System Length||Mid-Length|
|Gas Block Journal||.625"|
|Twist Rate||1:7 inches|