Our OMNI HYBRID MAXX features a fully-patented metal reinforced polymer upper receiver along with a fully-patented metal reinforced polymer lower receiver. The Omni Hybrid lower features a patented hammer and trigger pin retainment system preventing movement from the hammer and trigger pin during firing. The Omni Hybrid also featured our patented over-molded metal insert which reinforces the buffer tube housing and rear takedown pin. This allows for metal-on-metal contact with both the buffer tube as well as the rear takedown pin thus increasing strength and durability from recoil and consistent firing. In addition a magazine is now included with all Omni Hybrid MAXX rifles. - Omni Hybrid MAXX Polymer Upper Receiver with Metal Insert - Omni Hybrid Polymer Lower Receiver with Metal Insert - 16 5.56 / .223 Black Nitride Coated Barrel - 13 Keymod Free Floating Rail - Low Profile Gas Block - Six Position Roger Super Stock - Includes One 30RD Magazine - Includes Iron Sights