Nemo Arms Battle Light 1.0 Semi-Automatic Rifle. Chambered in .223 Wylde, this rifle has an 16-inch 416R stainless steel match-grade barrel with a 1:8 twist rate and bead-blasted finish, tuned mid-length gas system with a pinned low-profile gas block, and a milled billet 7075-T6 aluminum upper and lower receiver. This firearm is fully ambidextrous with the safety selector, charging handle, and magazine release, paired with titanium pivot/takedown pins.