These barrels are a true match-grade barrel, we only have one grade for all of our barrels, our best. All of these barrels are made from 1″ diameter 416 alloy rifle-barrel-quality stainless steel. Every barrel is drilled, reamed and rifled in our shop followed by a stress relieving heat treatment operation. They are then hand- lapped for a superior internal finish and diameter uniformity.

AR740: .975″ diameter in front of the barrel extension with the Wasp section turned to a diameter of .750″ and then tapering back up to .975″ diameter at the gas block. The gas block section is turned to .750″ and from the gas block to the muzzle the diameter is .740″. The barrel length is 20″ including the barrel extension and is set for a rifle-length gas system. The muzzle end is threaded .500″ x 28 TPI (threading is not shown in this image). Weight is 2.60 pounds. Engraved: Lilja AR .223 8T. To see a .pdf drawing of the profile – Click here

Threaded 1/2 X 28″