The UTG super slim vertical foregrip is ergonomic ambidextrous lightweight aluminum metal and the best vertical foregrip for your Picatinny rail. The vertical foregrip features a low profile Mil-STD-1913 Picatinny base with squared recoil stop lug and guided locking plate to attach to most mil-spec 1913 Picatinny rail. The UTG vertical foregrip is CNC machined from lightweight aircraft grade aluminum with a durable matte black finish. Grip has dehorned corners and melted contours with a slim ergonomic profile.