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For the most consistent reliability we recommend you use the Echo1/Cyma 110 round straight MP5 magazines
Hammer Spring increase the hammer tension resulting higher gas output
Material：7075 Aluminum material
MPN: AV1-M4-SI-XS-BK21
test all of them first to find the best universal adjustment
G&G STP45 CO2 GBBP Pink 400-550 For the most consistent reliabilityDurable 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
US$ 103781.10
US$ 105.00
US$ 502.50
