Guns Modify EVO CNC Steel Drop in Lower Parts Set for Marui M4 MWS GBB Length-(mm)_1070 thumb push button for a

thumb push button for a quick release

since R/C mini-tamiya connector has different polarity than the airsoft one

GBB users: This is an AEG-cut hop up bucking

Perfect for 3 Gun Competitors or any shooter who would like to carry an additional magazine while at the range

The best part of these goggles is the additional temple straps to ensure your eye pro is secure over your eyes

Guns Modify EVO CNC Steel Drop in Lower Parts Set for Marui M4 MWS GBB Length-(mm)_1070 thumb push button for aGuns Modify EVO CNC Steel Drop in Lower Parts Set for Marui M4 MWS GBB Metal Construction Package Include Trigger Box, Magazine Release, Selector, Bolt Catch & Some Parts Design for Upgrade the Original Parts More Durable Suitable For Tokyo Marui MWS M4 Series Gsa Blow Back GBB Rifle Airsoft Guns