An Airsoft PEQ (Power Equipment) box is a small, box-shaped device that is typically mounted on the side of an airsoft gun. The PEQ Battery Container is made to hide your AEG's battery and let you use PEQ-style block batteries in a front-wired AEG with limited space. Its hollow interior means you can hide a large PEQ Box/Block Battery inside and run the cables through one of the holes in the unit. You can take off the whole front end to fit your Battery inside, but then you should run either the Gun cables or the Battery cables through one of the holes in the unit. This way, you can use a bigger Battery without it being obvious on the Gun. This makes it perfect for Front-Wired Guns, like MP5s or M4A1s, that would otherwise have to use a small battery.