As previously stated, 90m at UK power limits is not
impossible But indescribably
improbable. UK Snipers are typically accurate (With internal tech work done) accurate up to the 70-80m area. Some systems achieve this easier than others, and some systems are able to push range up slightly despite our power limits because of other factors (i.e. Super high volume cylinders push heavier BBs).
Before anything else, do some research on websites with may more info on this topic specifically -
https://www.airsoftsniperforum.com has a treasure trove of the nitty gritty details for sniper work. Searching up the platform your about to buy on here usually gives you a wealth of details and such that you'll want to know to get your sniper going as far as it
Possibly can.
But to get the lightest, quietest and furthest shooting sniper you can, you've got two options - Tac41 or VSR. VSR is a more well-documented platform. With better support and more tech guides. However, it is a bit harder to get into peak performance (imo) and its generally louder than the Tac-41. On the other hand, the Tac-41 is an easier upgrade. It only
Needs a Spring swap to get great range, But for the quiet aspect, you'll also want a WASP or other quiet piston, which is also a pretty easy swap out. Its a little heavier than the VSR, but its not as heavy as the other two Silverback options (SRS and HTI. Above all, slap a decent suppressor on the end of the barrel and that'll do a lot for the noise.