FRT Direct.

Which forced-reset trigger is engineered for your lower?

You are not buying a range toy. You are procuring a controlled, reliable, high-cycle-rate mechanism. The correct FRT is defined by your lower’s geometry and fire control group pocket. Our design accounts for shelf depth, pin alignment, and hammer arc. A mis-match causes a dead trigger. We provide the mill spec blueprint for your reference.

The FRD-15 core unit fits standard AR-15/M4 pattern lowers with a full auto pocket. The FRD-10 is machined for the SR-25/AR-10 platform. You must verify your lower’s compatibility. We list the exact lowers we have tested: Anderson, Aero Precision, Coltr, SOLGW. Polymer lowers or those with reinforced trigger pin holes often require fitting.

The installation is a precision operation

Installation is not “drop-in”. It is a fitting process. You will need a set of pin gauges, a .154" hammer pin, and a 1/16” punch. Remove your existing fire control group. Insert the FRT hammer first. The disconnector must sit flush against the trigger pin. The sear spring orientation is critical; a reversed spring causes runaway fire.

Test function with an empty, modified BCG (our recommended method) or a dummy round. The bolt carrier must trip the reset lever cleanly. If the hammer follows, check for sear engagement. The provided jig allows you to verify the reset lever’s travel. Do not use anti-walk pins. They change the critical geometry. We offer pre-assembled FRT lowers for a guaranteed fit.

Your bolt carrier group is not optional support gear

A standard M16-profile BCG will break your FRT. The cam pin impacts the reset lever with every cycle. A soft, mil-spec cam pin deforms. You need an FRT-specific BCG. Ours use a 8620 steel cam pin, heat-treated to 50 HRC, with a radiused lobe to reduce impact stress.

The carrier itself must be full-auto profile. The auto sear trip shelf must be present. We CNC our carriers from 9310 bar stock. The gas key is fastened with Grade 8 screws and staked to Milspec 86241. This prevents carrier tilt, which induces reset failures. Our compatibility list is short and proven: our own FRD BCG, and select models from Lantac and Sons of Liberty Gun Works.

Direct engineering. Direct sourcing.

We are the manufacturer. The engineering prints are on our bench. We source 4140 steel for hammers and 17-4 PH stainless for reset levers. Every component is shot-peened and QPQ nitrided. We test each batch in a registered M16 lower for a 5,000-round cycle count. This is not reseller speculation.

Your order ships free over $99. We accept Bitcoin for direct, private checkout. Your rebuild is a technical project. We supply the proven components and the exact data required for a successful build. The systems below are in stock and ready for your receiver.

Select your platform to proceed.