Glock 21 G21 .45 Under-Desk Surface Mount Holster

mount to a night stand, bed, desk, above a bookshelf, the side of a cabinet, somewhere in your car.
Can sit flat or at any downward angle, but might fall out if placed upside down. Snug fitment, draws easily.
4 mounting screws needed, 4mm diameter or less. should fit all generations.