T-N.T. Studio APS-X Inner & Outer Barrel with Hopup Rubber Complete Set For KSC MP9 (345mm) Manufacturer_Ready Fighter your hop up packing is

your hop up packing is probably worn down

-The RM1 Guide Rod is compatible with Tokyo Marui Hi-CAPA / 1911 Series Airsoft GBB Pistols

- Can not be used on KWA / Marui

All Available Color

At the base is the low profile magwell

T-N.T. Studio APS-X Inner & Outer Barrel with Hopup Rubber Complete Set For KSC MP9 (345mm) Manufacturer_Ready Fighter your hop up packing isT N. t Studio specially designed for KSC MP9 TP9 GBB Full CNC five axis precision machining, can be used with T N. T full range of general specifications precision Air cushion inner barrel !! T N. T MP9 Retrofit Kit change not only material but also change to conventional, completely flip the performance of the KSC MP9 !! Let your KSC MP9 at the same time both the rifle range, and really become a battlefield beast ! More straight, more accurate, and