USP Shooters Design metal slide
 

So i am thinking about getting a KWA USP and the shooters design metal slide but I have never upgraded a gun before, do you think it would be possible for a noob like me to do it?

Yeah it's easy. But you'd need to upgrade on the recoil spring too.
Why not buy a full metal USP?

tis a good idea but i can't find any

uhm, generally the KWA usp's i've seen come full metal. Its the KSC ones that need upgrading.

i know but i want to get a silver slide + threaded barrel.

you might need to get the KSC USP then, because the shooters design slide is meant for that. I'm not too sure, KWA might be based on the same design but you're gonna have to find that out to see if the slide will work with a KWA gun.

KWA and KSC are identical except the KWA has no trades and comes stock with a metal slide. Also, if you want a silver slide you can sand and buff the black off the KWA slide to a nice silver colour. I'm not sure how good it looks but I'm pretty sure it'd be pretty good if you spent the time to buff it to a nice shine. As for a threaded barrel, I'm not sure why you want one unless you plan to attach a suppressor to it. In that case you might be better off with a Mk23 or USP tactical (unfortunately both are more rare and expensive in the airsoft world).

In any case, I own the KWA USP though and that thing is a beast out of the box. It runs propane out of the box, has a good kick and has great accuracy for a price you can't beat.

yeah I would love a tactical usp or mk23 but both are rare as you say so i figured i'd work with whats available.