The Strike Industries Spare Magazine Holder for SIG SAUER P320 is designed to provide quick and easy access to a spare magazine this holder can be mounted on most P320 grip modules with minimal effort. Equipped with locking retention for seamless mag changes the holder is securely fastened to a Picatinny rail at a 5 forward angle. With easy installation this magazine holder is the perfect accessory for those looking for a reliable and accessible way to carry a spare magazine.