Umarex G3A3 by WE NPAS installation

Just got your rifle out the box, loaded her up with the recommended green gas and rushed off to your game day to enjoy that blasting, just to find that she's just a little too spicy for the site, and she chronos in excess of 450fps, and your sites limit is 350fps? Well, RA tech has you covered! The adjustable NPAS allows you to alter how much gas goes down the barrel vs backwards through the bolt. What will you need? RA-Tech NPAS for WE Open Bolt systems various small screw drivers / punches pair of pliers