Vism VAAR45VG Tactical Vertical Grip With Innovative Design: 45°/ 90°/ -45° Side to Side With a push of a spring loaded button. Vertical Grip can be turned sideways 45° from vertical in either direction. Vertical Grip locks in place (3 positions). Works great with the optic or for offset reflex optics set at 45°. Improves the ergonomics. More comfortable grip when using Drum Magazines. Mounts onto Weaver/ Picatinny/ MIL-STD 1913 rails. Mount and pivot mechanism is all metal construction. Vertical Grip handle made from Black Polymer. Vertical grip has a bottom plug with an O-Ring for a waterproof storage compartment, space for spare batteries, spare parts, and tools.