The Ghost Inc. Mother of All Baseplates (MOAB) has been designed to enhance your shooting experience. With its extra power magazine spring, rounded ergo design, positive magazine seating, and extraction traction points, youll notice the difference the MOAB makes right away. The MOAB LoViz is designed for concealed carry, featuring a lower profile for deeper concealment.Features :Plus 4 Rounds of 9mm, Plus 3 of 40S&W/357 SIGFits GLOCK 19X/17/17L/22/24/31/34/35/37/45/47 OEM MagazinesExtra Power Magazine SpringRound Ergo DesignPositive Magazine SeatingExtraction Traction PointsDebris Extraction PortsLow Profile for Deeper ConcealmentSuperior Combat Tough Construction