VFC Sig Sauer ProForce P320/M17 Airsoft Magazine Black (Green Gas / CO2) nineball Gearbox: Avalon ECS V2 gearbox

Gearbox: Avalon ECS V2 gearbox w/ quick spring change

from the 9mm version

machined aluminum slide and barrel assembly and interchangeable backstraps

Easier installation and fewer dropped BBs

VFC Sig Sauer ProForce P320/M17 Airsoft Magazine Black (Green Gas / CO2) nineball Gearbox: Avalon ECS V2 gearboxThis magazine is compatible with the SIG AIR P320 M17. Please note that mags are not DUAL power. They are either green gas OR CO2. Compatibility: SIG AIR P320 M17 SIG AIR P320 M18 Capacity: 25 Rounds Power Source: Green Gas CO2 Includes: x1 SIG AIR 25rds Magazine for P320 M17 GBB (Green Gas OR CO2) Black (Licensed by SIG Sauer) (by VFC)