Huben Huben Gk1 V3 Rear sight problem

Hi all, for some reason my gk1’s rear sight moves all the way to the left after I leave the gun by itself for a while…does anybody know how I can fix this? Or link to a replacement part? It’s brand new I dunno why this is happening… >.<

@castro510 This is just a guess, but Is your windage adjustment screw loose? Is it possible that you backed it out too far? Does this only occur when you lay the gun on its right side? Some photos would be helpful so we can see what you're talking about.