A complete rifle, built around the super selector. Add an optic and go shooting. Here's what makes the Atrius Super Selector so cool: it isn't a trigger, and it isn't some complicated swap. It's a safety selector with a third position. Flip past SAFE and SEMI to SUPER-SEMI and your trigger suddenly resets fast - giving you quick, controlled follow-up shots that feel like nothing else on a standard AR. Want to settle back down for precise single shots? Just thumb it back to SEMI. Same rifle, two totally different personalities - all from one flip of your thumb. The thing about the super selector is that it asks a lot of a rifle - it cycles the action hard and fast, so the rest of the build has to keep up. That's why we didn't just drop one in and call it a gun. We built the whole rifle around it, fit it, torqued it to spec, and function-checked it before it ever left the shop. No fitment headaches, no guesswork, no late-night YouTube rabbit holes - it shows up ready to run. Here's what makes it run right: An H2 buffer, weight-matched to this 16 mid-length gas system, keeps the action cycling smooth and consistent - exactly what a forced-reset selector wants. Our Dirty Bird Enhanced BCG runs a full-auto-profile carrier with relocated load-bearing surfaces to cut down on carrier tilt, plus an HP-tested, MPI-inspected 9310 bolt - the kind of durability that matters when you're cycling fast. Our Dirty Bird Nickel Teflon trigger gives you a smooth, clean break, and it's exactly the kind of trigger the Atrius is designed to work with. It even ships with a reduced-power spring set if you like a lighter pull. Three flips of the thumb: SAFE - locked up and ready to carry SEMI - your normal, accurate single shots SUPER-SEMI - forced-reset fire for fast, fun, controlled follow-ups What you're getting: 16 5.56 NATO barrel, mid-length gas - eats a huge range of ammo with a smooth shooting impulse The Atrius 3-Position Super Selector - heat-treated 4140 steel, crisp 90deg throw, made in the USA - installed and dialed in 15 Dirty Bird SMRS Gen 2 M-LOK handguard - free-float, M-LOK, snag-free octagonal profile, and the ASAL anti-slip/anti-lift mount locks it on so it won't budge, rotate, or lift Dirty Bird Enhanced BCG - 9310 bolt, Black Nitride finish, HP-tested and MPI-inspected Dirty Bird Single-Stage Nickel Teflon trigger - smooth, clean break with a reduced-power spring set in the box, backed by the Dirty Bird Limited Lifetime Warranty H2 buffer, NOLO forged lower and flat-top upper, A2 flash hider, mil-spec charging handle, A2 grip, M4 carbine stock Optic-ready flat-top - mount your favorite red dot or LPVO Assembled and function-checked in Youngsville, NC A few quick things to know: Ships to your FFL - a complete rifle is a firearm Chambered in 5.56 NATO (also runs .223 Rem) Optic-ready - no sights or optic included Can't ship to: CA, CT, DE, FL, HI, IL, MA, MD, MN, NJ, NY, OR, RI, WA, D.C., U.S. territories, or overseas No logo, no nonsense, no build night required - just add an optic, flip to that third position, and have some fun.