Our Five position foldable fore grip is constructed of Polymer for durability and comes in a Black finish. It comes with a Built-in end cap storage compartment for storing accessories. It can hold up to 2 x CR123 batteries or other small miscellaneous items. The grip features a contoured, ergonomic design with finger grooves that makes it easy and comfortable to hold. The fore grip can be locked into 5 different positions by just the push of a button and easily moving the handle to your desired position. This allows the grip to be folded completely in the forward or rearward position for easy storage and less bulk. This grip will attach to most any Weaver/Picatinny rail systems. Ideal for rifles setup with quad rails or rail systems under the forend. Attaches via a thick allen head bolt. The bolt also acts as a recoil lug by indexing across the rail systems cross slot. This item is intended for medium duty use and is well suited for .223 ( 5.56mm ) caliber rifles and smaller.