Holds up to 24 semi auto pistols and/or revolvers, and up to 40 extra magazines. Maximum allowable length of semi-auto or revolver is 9.37″, and maximum allowable length of magazines is 6.0″. Does NOT accommodate optics or under barrel attachments. Case is 100% Waterproof, Dustproof, and crushproof, and the foam insert is (closed cell) military grade polyethylene which can be wiped clean. Case is padlockable, and comes with 2 silica gels to help keep rust free.