Premium AR‑15 & Reset Trigger Systems

Engineered for speed, precision and reliability – made in the USA.

Partisan Triggers Disruptor FRT

Assisted‑reset, 3‑mode drop‑in trigger with Safe, Semi and Enhanced Positive 3rd Mode.

Heat‑treated 4140 & S7 steel, and made in America.

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Firearm Systems Blog

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Why Choose Firearm Systems?

Precision Engineering

Meticulously machined components with NP3 and nickel‑Teflon coatings for long‑lasting performance and smooth pulls.

Fast Resets

Assisted and forced reset technology delivers positive resets, zero overtravel and faster split times for competitive edge.

ATF Compliance

Our triggers are non‑NFA and include compliance letters, ensuring legal peace of mind for shooters across the U.S.

Latest from the Blog

Ultimate Partisan Disruptor Legal Guide 2025-2026 (Federal vs. State)

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Ultimate Guide to Tuning the Delta Velocity Gen2 3MR Trigger

Fine-tuning the Delta Velocity Gen2 3MR trigger can significantly enhance your shooting experience, offering smoother pulls and more ...

Delta Velocity Gen2 3MR: The Ultimate Installation Guide

If you are looking to upgrade your AR-15 or AR-10 with the Delta Velocity Gen2 3MR trigger, you ...

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Customer Reviews

“The Disruptor installed in minutes and completely transformed my AR‑15. Smooth and lightning fast!”

– J. Stevens

“Firearm Systems’ customer service is top‑notch. The FRT exceeded my expectations.”

– A. Ramirez

“Finally a drop‑in trigger that delivers on performance without breaking the bank.”

– M. Johnson