The Arisaka Vertical Grip is a robust, minimal grip for M-Lok handguards. It features a radiused profile at the top which tapers to meet the mounting surface on the handguard, giving a low-profile feel and ergonomic comfort. Twin mounting screws ensure secure attachment. The grip is hollow, with no end-cap. Height: 2.50" Width: 1.30" Weight: 1.8 oz The Vertical Grip is CNC machined from 6061-T6 aluminum and MIL-A-8625 Type III hard coat anodized. Requires a 3/32" Allen wrench for installation (not included). Made in the USA. M-Lok Installation Guide