Guns Modify EVO Complete Steel Trigger Box for Tokyo Marui M4 M16 MWS GBBR

Specifications

• Brand: Guns Modify
• Compatibility: Tokyo Marui M4 / M16 MWS Gas Blowback Rifles
• Material: Steel (complete trigger box assembly)
• Weight: 270 g
• Includes: Fully assembled trigger box, trigger pin, rear screw

Features

• All-steel construction for maximum strength and durability under high-stress use
• Full steel fire control group for long-term reliability and smooth trigger operation
• AR-style direct sear and trigger lever system for improved responsiveness and control
• Adjustable hammer spring (100%–160%) for tuning trigger breakout and hammer energy
• Heat-treated carbon steel bolt stop plate and 80% bolt stop spring for rapid, consistent cycling
• Drop-in, fully assembled upgrade — installs with no modification required
• Includes trigger pin and rear screw for secure fitment
• Precision-engineered by Guns Modify for professional-grade compatibility and performance

Professional-grade strength and reliability

The Guns Modify EVO Complete Steel Trigger Box is a heavy-duty internal upgrade engineered to withstand the demands of high-output MWS gas systems. Built entirely from steel, the complete fire control assembly delivers exceptional structural integrity and long-term durability — ideal for competitive players and professional training environments where consistent performance matters.

Crisp, responsive trigger performance

Featuring an AR-style direct sear and trigger lever architecture, the EVO trigger box produces smooth, precise trigger movement with reduced wear. The precision-machined components and full steel fire control group combine to give a noticeably crisper pull, faster follow-ups, and improved shot-to-shot control compared with stock units.

Tunable, drop-in upgrade for MWS platforms

Designed for Tokyo Marui M4/M16 MWS compatibility, the EVO trigger box installs as a drop-in assembly and ships fully assembled with trigger pin and rear screw for secure fitment. An adjustable hammer spring (100%–160%) and heat-treated carbon steel bolt stop plate with an 80% bolt stop spring let you tune engagement and cycling to match gas pressure and build goals.