Airtech Studios KWA TK45 and Ronin PDW BEU Battery Extension Unit Sights Adjustable Retention Strap with quick-release

Adjustable Retention Strap with quick-release buckle

Sights are removable

Manual wind style

NcSTAR 3/4" Quick Release Riser Mount

Airtech Studios KWA TK45 and Ronin PDW BEU Battery Extension Unit Sights Adjustable Retention Strap with quick-releaseThe 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