SIG Sauer Proforce Spare Magazine For P320 M17 MHS GBB Pistol - CO2 - Tan CO2 Pistols Used under license to Planet

Used under license to Planet Eclipse Ltd

A revolutionary new spool valve design using Breech Sensing Technology and a unique pneumatically latching spool to accurately control the exact amount of air released for each shot completely independently of the solenoid and the dwell time

FPS Range: 320-350

but appears to be done poorly or it is simply coming off

SIG Sauer Proforce Spare Magazine For P320 M17 MHS GBB Pistol - CO2 - Tan CO2 Pistols Used under license to PlanetFeatures: Metal alloy construction Compatible with 12g CO2 cartridges 21 round capacity Specifications: Compatibility: SIG Sauer Proforce P320 M17 MHS GBB Pistol Magazine: 21+1 rounds Gas Type: 12g CO2 cartridge