Airtech Studios KWA TK45 and Ronin PDW BEU Battery Extension Unit Multicam Acetech AC5000 is an airsoft

Acetech AC5000 is an airsoft chronograph with high quality and accuracy

with Pressure Arm and Gear

Customize your gun to make it the ultimate CQB airsoft gun

we have a better price on the 5x box set

Rocket D-Type Pinion Gear

Airtech Studios KWA TK45 and Ronin PDW BEU Battery Extension Unit Multicam Acetech AC5000 is an airsoftThe Airtech Studios KWA TK45c and KWA PDW BEU Battery Extension Unit. Very easy to install so you can add longer and bigger batteries in your rear stock buffer area. With it installed, you can use 9. 6v 1600mah nun chuck, and any longer 11. 1v batteries in it, with extra room to spare. This is a must have for those that want flexibility with battery space. Can fit up to a Titan 3000 nun chuck 11. 1v. Installation is drop in, no tools or anything