This is the standard foregrip that we include with our launchers. It is low profile and slides on to Picatinny rails and locks with an indexing screw. Prominent texturing ensures a firm grip during fire, hollow compartment at bottom for storage. • Single battery compartment • Compatible with Weaver / Picatinny 1913 Rails • Black polymer finish We have found a high level of approval of this accessory from our customers. We are now offering it as a separate accessory.