Hi all,
So I recently HPA'd my FNX 45 which is great, and it works fantastic. But I'm having one issue, I'm not sure if it's because it's a slightly hotter gun than before now (not too much, don't worry), or something else, but I found that after I zero'd the red dot and skirmished the gun further, the red dot kept losing the zero'ing that I'd done. This wasn't slight changes for adjustment but essentially the sight ended up being completely off.
I'm not sure if this is a case of the red dot being poor (which would be a shame, it's been working great so far!), not being screwed tight enough (surprising as it worked fine before the gun was HPA'd) or some other reason I haven't considered. But any insight would be great.
I linked below the exact red dot I'm using. If it is the red dot, any recommendations would be welcomed. Thanks guys!
TM Red Dot.