The Radian Vertex FBX (Radian part no. R0928) is a single-stage, drop-in AR-15 trigger finished in black with a flat trigger bow. Radian built it around TriggerTech’s Zero Creep Technology and a Frictionless Release Technology roller sear, with 440C stainless steel internals, delivering a crisp, zero-creep break at roughly 3.5 pounds with short overtravel. The flat bow gives a consistent contact surface across the full vertical travel of the shoe, which shooters who index with the distal joint of the trigger finger often prefer for precision work.

Key Specifications

• Single-stage trigger.
• Uses TriggerTech’s Zero Creep Technology internals.
• 440C stainless steel internal components.
• Frictionless Release Technology roller sear.
• Breaks at approximately 3.5 lb with a zero-creep feel and short overtravel.
• Flat bow (FBX) trigger shoe.
• Drop-in fit for AR-15-pattern lowers.

Frequently Asked Questions

What’s the difference between the FBX and CBX Vertex triggers? They share identical internals — the FBX has a flat trigger bow, while the CBX has a curved trigger bow; the choice comes down to finger-placement preference.

Is this a drop-in trigger? Yes, it’s built to drop into standard AR-15-pattern lowers.

Buy the Radian Vertex FBX Single-Stage AR-15 Trigger, Flat Bow, Black

Order the Radian Vertex FBX Single-Stage AR-15 Trigger, Flat Bow, Black from a Lubbock, TX gun shop for fast, reliable shipping. Shop more Radian Weapons gear or browse the AR triggers category at Schaefer Defense.