· Box Batery style PEQ-16 · It can accommodate LiPo, NiCd and NiMH · Mount QD Weaver / Picatinny integrated all rails 20mm adapts Includes removable extension to enlarge the space available · Dimensions: 14.5 * 6.5 * 5cm · extension dimensions: 16 * 6.5 * 5cm · Material: nylon