Built on our AR15 pattern patented polymer hybrid Omni upper and lower receivers, this rifle is fitted with a 16" M4 profile barrel with 1:8 button cut rifling chambered 300 Blackout, a low profile mid length gas system, 15" free float aluminum M-LOK rail system, six position adjustable Mil-Spec A2 buttstock, and A2 style compensator. Trigger group consists of an AR15 pattern, Mil-Spec lower parts kit. Specifications:* 16" M4 profile barrel, 1:8 chambered in 300 Blackout* Patented Omni Hybrid Upper and Lower Receivers* 15" Free Float Aluminum M-LOK Rail System* Low Profile, Mid Length DGIS Gas System* A2 Compensator* 6 Position Adjustable Mil-Spec A2 buttstock* Mil-Spec AR15 Lower Parts Kit* Black Nitride Finish AR15 Bolt Carrier Group* Ammend2 Magazine, 30 round capacity (.223/5.56)* Lower Receiver Endplate with Ambidextrous Sling Loop