CAT Devices Gen2 Magnetic Mounting System Adapter Plate HK USP RMS Black. Designed for shooters who demand speed and flexibility this innovative system allows a red-dot sight to be installed or removed instantly thanks to CAT s patented magnetic interface. The CAT Device Magnetic Mounting System (GEN2) is an innovative pistol optic solution designed to provide a fast secure and low-profile way to mount a red-dot sight without permanent slide modifications. Combining a precision reflex sight with a patented magnetic mounting plate the system allows shooters to transition between iron sights and optics in seconds while maintaining reliable alignment and zero. Specifications for CAT Devices Gen2 Magnetic Mounting System Adapter Plate: Manufacturer: CAT Devices Fabric/Material: Aluminum Color: Black Weight: 2.42 oz Features of CAT Devices Gen2 Magnetic Mounting System Adapter Plate Magnetic Red Dot Mounting System Package Contents: CAT Devices Gen2 Magnetic Mounting System Adapter Plate Allen key rear sight What firearm models does the manufacturer say CAT Devices Gen2 Magnetic Mounting System Adapter Plate is compatible with? The manufacturer says that CAT Devices Gen2 Magnetic Mounting System Adapter Plate is compatible with Glock 19 Glock 23 Glock 17 Glock 22 Glock 45 Glock 43 Glock 43X Glock 48 Glock 20 Glock 29 Glock 30 Glock 21 Glock 41 Heckler & Koch USPCAT Devices CATMMHK01: Gen2 Magnetic Mounting System Adapter Plate HK USP RMS Black