ARES E.F.C.S. Advanced Electronic Circuit Unit For ARES M4 Series Airsoft AEGs

Features:

• Precise magnetic sensors control piston position
• Reduce stresses on spring, increasing lifespan and a more stable muzzle velocity
• Requires less battery power to initiate motor
• Onboard ABC enhanced piston positions
• Able to withstand rapid semi-auto fire
• Easy to adjust trigger stroke
• Fast trigger response