This rifle features a 20-inch stainless steel barrel with 1:8RH twist, 19.25" picatinny rail on the upper receiver, with M-LOK attachment points on the remaining sides. MARS-H barrels utilize a low profile gas block and a straight gas tube. The MARS-H ambidextrous lower features EDM machined two-stage trigger, winter trigger guard, endplate with QD swivel point, LMT ergonomic textured grip, and a SOPMOD stock. The The ambidextorus features include bolt catch and release, magazine catch, and safety selector. This ships with one 20-round magazine, an owners manual, 3 rail panels, and a lock.