Precision-engineered from heat-treated 4140 steel, the Atrius FRS delivers uncompromising performance in a drop-in package. Experience forced reset technology without the wear and complexity of traditional FRT systems.
Features
Configuration: Safe | Semi | Super-Semi
Compatibility: Mil-Spec AR15 (.223/5.56/.300 BLK)
Installation: Drop-In Ready (No Modifications Necessary)
Made in the USA
Materials
Drop-In Installation
Swap out your factory safety in minutes and experience the next level of firearm ownership.
Runs with Mil-Spec Fire Control Groups
Seamlessly integrates with standard AR fire control groups and some cassette style triggers.
Hardcore Durability
Crafted from heat-treated, 4140 steel and coated in a corrosion-resistant black nitride finish. Rain, mud, sweat—it eats it all for breakfast.
No Modifications Necessary
No cutting your triggers. Ensures flawless function and longevity without modification.
Aggressive Ergonomics
Textured, chamfered-edge, and purpose-built design for speed. Your fingers will find the selector instantly, even under stress.
Compatibility
All Atrius FRS products have direct compatibility with mil-spec triggers that do not have a relief cut (U-notch).
They also are compatible with a wide variety of single-stage, drop-in / cassette style triggers as well.
The “G-LEVER” is the only FRS product that carries expanded compatibility to work with select Geissele triggers and similar products that feature a reduced hammer design.
Compatibility Note
The FRS is drop-in compatible designed with mil-spec and full profile AR15 components. Check out our compatibility page for more information.
View Full Compatibility Table
