The newly redesigned BT27 Folding Vertical Fore Grip offers two opposing at surfaces to secure light switches. Removing the bottom cap reveals a storage compartment designed to hold a single 123 battery. The unique design protects the battery from being drained by placing the positive side towards the relieved cap. The handle was trimmed to decrease weight while maintaining battery storage and touch pad retainers. B& T Industries FVFG - Folding Vertical Fore Grip BT27