The new GG&G Vertical Foregrip has been redesigned with additional features to not only provide a solid vertical gripping platform for the support hand, but also offer unique storage capability for spare AR-15 parts or batteries for tactical accessories. This durable Acetal Polymer grip incorporates an O-Ring Sealed Waterproof Storage Core designed to house a spare AR-15 Bolt Assembly securely without rattling. The storage core is also large enough to accept 2 AA batteries, 2 CR123A batteries, 3 N-type batteries, firing pins, extractors or other small spare parts. The grip installs without the use of tools by screwing in the storage compartment to engage an unused Picatinny rail slot.