MARS TRIGGER LLC

Mars Trigger AK FRT V1 Installation Overview
The Mars Trigger AK FRT V1 is designed as a universal fitment system, with installation complexity varying based on your specific AK platform. Installation difficulty ranges from basic to advanced, depending on your rifle variant and required fitting procedures.
Determining Your Installation Path:
To verify compatibility with your specific rifle and understand the installation requirements for your firearm, please consult our compatibility guide or reference the Mars Trigger AK FRT V1 Compatibility Chart. Once you've confirmed your rifle is compatible with the V1 system, we recommend reviewing the complete installation manual and watching our platform-specific installation demonstrations available via our Instagram channel @mars.trigger25.
Installation Support:
For video installation consultations and platform-specific guidance, contact us through Instagram @mars.trigger25 or email info@marstrigger.com. Our team is ready to assist you in ensuring a successful installation.
INSTALLATION
STAY TURNED NEW AND IMPROVED GUIDES AND VIDEOS COMING SOON. CHECK OUT INSTAGRAM @MARS.TRIGGER25 FOR CURRENT INSTALL TIPS AND TRICKS
Mars Trigger AK FRT V2 Installation Overview
The Mars Trigger AK FRT V2 Spring-Loaded system represents a significant advancement over the V1. The integrated spring mechanism within the Safety Rocker eliminates the manual reset dependency of the V1, delivering faster, more consistent reset with every trigger pull. The V2 is more reliable, more refined, and easier to install than its predecessor — making it the definitive AK FRT solution for both new and experienced builders.
Why Upgrade to V2?
The V2 spring-loaded design provides automatic Safety Rocker return, removing a key variable that required careful manual adjustment in the V1. The result is a more consistent trigger feel, improved reliability across a wider range of AK platforms, and a smoother installation process. The integrated spring mechanism gives the shooter greater control over rate of fire compared to the V1 — allowing for more deliberate, repeatable shot placement without sacrificing speed. The V2 also features enhanced component geometry throughout, with tighter tolerances and improved fitment that reduce the need for modification on most standard AK receivers.
Determining Your Installation Path
To verify compatibility with your specific rifle and understand the installation requirements for your platform, consult the Mars Trigger AK FRT V2 Compatibility Chart. We recommend reviewing the complete installation manual and watching our platform-specific demonstrations on Instagram @mars.trigger25 before beginning.
Installation Support
For video consultations and platform-specific guidance, contact us via Instagram @mars.trigger25 or email info@marstrigger.com. Professional installation is also available, performed by our lead engineer and test-fired for confirmation.
The Mars Trigger MP5 Complete Lower System is a purpose-built, drop-in trigger housing engineered around the Hoffman 3-Position Super Safety — delivering turnkey forced reset capability with zero parts hunting. Pre-installed FCG, hardened D2 tool steel slip trip, and steel-reinforced internals built to handle thousands of rounds straight out of the box.
Why Choose the Mars Trigger MP5 Lower?
Most MP5 FRT builds require sourcing and fitting multiple components. The Mars Trigger lower eliminates that entirely. The housing is precision-engineered around the Super Safety so everything works in harmony from day one — Safe, Semi, and FRT in a single selector, a CNC-machined D2 slip trip for consistent long-life engagement, and a polymer housing that's steel-reinforced where it counts. Drop-in ready. Install and go.
Compatibility
Compatible with HK SP5/SP5K, PTR 9/9K, Century Arms AP5/AP5-K/MAC5-K, and Zenith ZF-5 series. MAC-5 full-size owners should verify FA BCG block clearance before installing. Consult the Mars Trigger MP5 Compatibility Guide and installation manual at MarsTrigger.com before beginning.
Installation Support
Questions? Reach us at info@marstrigger.com . Professional installation available — every unit is hand-assembled in Clarksville, Texas and test-fired before shipment. Lead time 14–20 business days.
Mars Trigger MP5 Lower Installation Overview

