Dirty Bird Falcon 16" 5.56 NATO 30RD Semi-Auto M-LOK Midlength AR-15 Rifle w/ Atrius Super Selector - 19251

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 90° 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

Federal law defines a “machinegun” as a weapon that shoots, or can be readily restored to shoot, automatically more than one shot, without manual reloading, by a single function of the trigger (26 U.S.C. § 5845(b)).
The forced reset triggers sold by [Company] are semi-automatic triggers. They fire one round per single function of the trigger. After each shot, the trigger must mechanically reset and complete a separate function before the firearm will fire again. These devices do not convert a semi-automatic firearm into a machinegun.
Altering, modifying, or combining an FRT with other parts so that a firearm fires more than one round per single function of the trigger may create an unlawful machinegun under 18 U.S.C. § 922(o) and the National Firearms Act. [Company] is not responsible for any modification, misuse, or improper installation.
State and local laws vary, and some jurisdictions restrict or prohibit FRTs. We do not ship FRTs to WA, OR, CA, NV, CO, MN, IL, HI, FL, NY, MA, RI, CT, NJ, DE, MD, DC, and Territories By purchasing, you represent that you may lawfully possess this item where you reside and where it will be used. You are solely responsible for knowing and complying with all applicable federal, state, and local laws. [Company] reserves the right to cancel any order it believes may violate applicable law.
This notice is for general information only and is not legal advice. Firearms laws change frequently. Consult a qualified attorney about your specific situation.