Ambidextrous, rugged, XPRESS mounted, vertical forward grip with capped storage compartment. The 4255 model comes ready to mount to any picatinny rail system.Features:Features an overmolded rubber grip attached to durable anodized base with steel boltThe threaded cap seals the storage area, each comes with a foam insertXPRESS Mount model attaches to Picatinny rails without removing other rail accessoriesThe 4257 model mounts to plastic handguards without picatinny railsAll NFA Rules Apply*Dual Use, compatible with rifles and shotgunsWeight 0.3 lbsDimensions 1.4 A- 2.4 A- 5.5 inAvailable Colors: Black, Dark Earth, OD Green