A Plus Airsoft are known to make amazing hop up rubbers for nearly all Airsoft guns so you can imagine how amazing this hop up chamber will be. This chamber is a solid replacement for the GHK M4 GBBR series.
Item also fits G&P, Western Arms, Inokatsu AR series, silver part will need to be removed to fit these systems, Western arms systems will need to use negative pressure bolt carrier , hopup system takes standard Tokyo Marui vsr-10 type buckings and inner barrel
Disclaimer: All aftermarket upgrade parts require necessary skill or modification to install and assemble, please consult with your airsoft technician if needed.