Battlegrip Model BGV-ITI is designed to use Insight Technologies, Inc. pressure switches as used on the PEQ-2 and ATPIAL lasers. The BGV-ITI is standard issue in the SOPMODII Kit. This rugged grip has all of the features found in the original BGV-MK46. Quick-release, dual locking bars provide a rock-solid mounting interface to Mil-Std 1913 rails. Large diameter, ribbed grip helps prevent hand fatigue and cramping during long periods in the ready position. Oversized storage compartment is large enough for spare batteries or parts, including a complete M4/M16 bolt assembly. O-ring on cap forms a waterproof seal down to 66 ft. deep. Remove side filler panel to mount a light/laser remote pressure switch in the integral switch pocket. Dual locking bar system Integrated pressure switch pocket for Insight Technologies brand pressure switches Waterproof internal storage compartment Length: 4 7/8" Weight: 4.64 oz Inside Diameter of Switch Pocket: 0.85"