If you are look to build a MP5-40 look no further! These front and rear sections came from agency trade in parts kits. Included is the German made MP5-40 front section with threaded tri lug barrel marked HK with German proof marks, front sight post with front sight, cocking tube with charging handle, intact magazine well with markings, and magazine release. Rear section has diopter sight. Also included is the bolt hold mechanism. Don't miss your chance to build a MP5-40! Sold as is, no returns/exchanges, all sales final!