Dimensions: 180mm x 125mm Magazine: 23+1 rounds. Designed for use with EMG SAI-19 or SAI-17 magazines Holster Compatibility: The SAI BLU Compact is not compatible with most molded glock holsters Gas Type: Green Gas, Red Gas, Propane (CO2 magazines available) Firing Mode: Semi Automatic, Safety System: Gas Blowback Hopup: Yes, Adjustable Package Includes: Gun, Green Gas Magazine, and Manual Manufacturer: EMG / Licensed by Salient Arms International. FPS Range: 315-330