PTS MEC M-Valve - KWA/KSC GBB Pistols Nozzle Type_20.75mm If you use an older

If you use an older style 9

Sizing adjustment on the sides and shoulders

Comes in Olive Drab Green

with included Umbrella Corp public information sheet

PTS MEC M-Valve - KWA/KSC GBB Pistols Nozzle Type_20.75mm If you use an olderThe MEC M Valve which can manage to increase gas efficiency. Constructed by high strength brass, it also minimizes the gas loss to fasten the entire cycling. Performance is more significant with a steel slide pistol. Features: High Strength Brass Construction Stainless Steel Valve Button Specification: MaterialBrass, Stainless Steel, Rubber. CompatibilityME101 KWA KSC Pistol, MP7, MP9 GBB.