G&G STP45 CO2 GBBP Pink 400-550 Better accommodates the modern support

Better accommodates the modern support hand forward rifle hold

For the most consistent reliability we recommend you use the Echo1/Cyma 110 round straight MP5 magazines

Compatibility: For Tokyo Marui VSR-10

Hammer Spring increase the hammer tension resulting higher gas output

test all of them first to find the best universal adjustment

G&G STP45 CO2 GBBP Pink 400-550 Better accommodates the modern supportDurable G&G Polymer Slide: The STP 45's slide is constructed using G&G's signature polymer, ensuring high durability for heavy use and abuse. Patented PAI Hop Up System: PAI is G&G's latest standard when it comes to pistol manufacturing to guarantee a high quality product when focusing on Precision, Accuracy, and Innovation. The Precision aspect of this refers to the strict manufacturing process that ensures that each STP 45's hop up utilizes a strict