Description
PRO ARMS 130% STEEL DUAL STAGE RECOIL SPRING GUIDE ROD FOR UMAREX VFC G17 Gen. 4 color red True Quick Change Spring System 150mm threaded inner barrel color arctic BBA2100000006372 Colour:Gold True Quick Change Spring System (you can swap between springs to increase or decrease its FPS in under 2 minutes Fits: Version 2 and 3 gearboxes