Christensen Arms 8011102500 MPP 12 1-7 Black M-Lok CF is a bolt-action pistol chassis with a carbon fiber wrapped barrel. Standard features include a 0-MOA optics rail, adjustable side-baffle brake, and Christensen Arms carbon fiber barrel. Threaded barrel yes. Finish: Black Nitride. Noted compatibility includes AICS-detachable magazines and optional SB Tactical FS1913A folding stabilizing brace.