Since the GHK have a more sharp edge on the magazine and not a curve like the original WA, it would crash against the mag release. So by filing the mag release in an angle will make the magazine enter the lower much more easy. In this video you will see me demonstrate first on the modified mag release and then after on a stock INO. The same problem is with the stock WA. To read more go here: http://www.gasguns.info/forum/viewtopic.php?f=18&t=904
