Good work actually contacting them, genuinely surprised you got a reply even if it is a page full of non-commitence.
That said i'm getting the vibe given how much they reference "local laws" it might boil down to "if the sale is a legal sale in [insert jurisdiction] then we cool".
Of course...
I can see them maybe helping space out if the barrel cut is slightly further back than the hop unit wants it to be.
Otherwise i can see potential for them distorting the position of the feed lips and giving you an air seal issue.
Firm agree here, my go-to for guns that didnt like the macaron...
There is a balance to be drawn over what's practical for airsoft and what's practical for real soldiers.
If you look at the things that make an airsoft gun practical for airsoft, well look at the speedsofters. Dropped stocks and minamilist guns unconstrained from the need to handle recoil. At...
tbf, you can do pretty good work without sights when you put some effort into it.
done it a couple of times, once borrowing pretty much exactly the kind of hpa rig you described and despite it being more a bugfixing session i was able to get it to work for me.
second time was much more fun...