Tactical Solutions PAC-LITE ultra-lightweight very accurate 6” barrel for Ruger Mark IV 22/45. Fluted and threaded (1/2” x 28), machined from billet 6061-T6 aluminum with hard-anodized matte black coating. 

Barely used, pretty much in new condition. Comes with a standard Ruger Mark IV bolt (which it did not originally come with) so all you’ll need is a complete Mark IV lower.