WE GLOCK 17/18 GBB RETROFIT KIT 97MM/STD GUN Easy installation into the gearbox

Easy installation into the gearbox instead of the original trigger contacts

In the package you get two rings

Min Output Pressure 40 PSI Max Output Pressure 130 PSI  (~200 PSI with HP Spring

High quality DOT Matrix backlit LCD display

Robust Metal Construction

WE GLOCK 17/18 GBB RETROFIT KIT 97MM/STD GUN Easy installation into the gearbox1. The body of the HOP chamber is designed in one piece and made of alloy precision casting. The rubber covered design has excellent air tightness and the installation steps are simple and fast. 2. The part that is most likely to break on the side of the HOP chamber : the sliding auxiliary positioning bump is replaced by a steel PIN, which is durable and will never break. 3. Change the HOP UP adjustment method to TDC : It can provide the average down