HECKLER & KOCH- MP5 22. Action: Semi-automatic blowback. Authentic Design: Modeled after the original MP5 with similar ergonomics, including the cocking handle/tube and metal receiver. Sights: Adjustable rear diopter drum sight and traditional hooded front sight. Magazine: 30-round capacity Stock: Retractable/collapsible stock. Muzzle: Faux suppressor/barrel shroud, though the barrel itself is threaded. Controls: Ambidextrous safety selector. Compatibility: While it has a bolt hold-open feature, it is designed as a dedicated .22 LR platform, not a conversion kit. Rifle: 16.1-inch barrel, with a retractable stock LIKE NEW IN BOX