Atrius Development Group ADG-FRS-S Forced Reset Selector AR-15 3-Position SAFE/SEMI/SUPER

The Atrius Development Group ADG-FRS-S Forced Reset Selector is a drop-in single-side, 3-position safety selector engineered for AR-15 platforms. Machined from 4140 steel with a black finish, the ADG-FRS-S replaces the factory safety lever with a solid cam design that delivers positive engagement and long-term durability under hard use.

The "S" (Super) configuration delivers three distinct firing modes: SAFE, SEMI, and SUPER-SEMI. With the selector in the SUPER-SEMI position, the forced reset action drives the trigger back to reset as the bolt cycles, allowing the shooter to maintain the trigger in a controlled rearward pull while the rifle fires in semi-automatic. This produces dramatically faster, more consistent follow-up shots without crossing the line into automatic fire. Selecting SAFE disables the forced reset and locks the safety as a standard two-position selector would.

The ADG-FRS-S is a true drop-in upgrade. It is compatible with mil-spec AR-15 fire control groups (no relief cuts in the hammer) and installs with no permanent modifications to the lower receiver. Installation uses the included T10 screw with a 4-40 thread, torqued to 15 in/lbs with blue Loctite.

Caliber compatibility covers the most common AR-15 chamberings: 223 Remington, 5.56 NATO, and 300 AAC Blackout.