I'm all for keeping the classes separate, in other words Vanilla, but whoever mentioned the LAR being a typically western thing got me thinking.
What if "Gunslinger" was "Cowboy"? He already starts with the 1858 "New Army" revolver, and while the S&W .500 isn't exactly "cowboy" it's still a revolver. Take away the 1911 and Deagle and give him the LAR, and dare I say give him the Double-Barrel as well?
Replace the sharpy lever with something like an Enfield Mk1. Bolt action could have similar, but slower, ROF to the lever, 10 round mag, faster reload because stripper clips, maybe up the damage a smidge because it WILL be slower than the lever... I'm missing my "Single Piston Long Musket" from KF.
Replace the Support double-barrel with something modern and interesting. I remember the HSG from the original KF... Or what about a S&W Judge .410 revolver as a class specific side-arm?
And the 1911 and Deagle? Drop the dual wield and make them universal sidearms, and let us REPLACE the M9!
Ultimately I think it's too late for all that, but it never hurts to dream, right?
But at this point we're so far along you'd need to overhaul the perks to make any major changes. I think on order to give the Sharp access to several pistols two things need to happen.
1) The Gunslinger perks need to be redone to actually make dual wielding pistols as GS strategic advantage over using them as SS.
2) Pistol balance needs to be redone to not make them overpowerd compared to the LAR.
As is, with the idea of there being a "Pistolero" and "Marksman" it makes 100% perfect sense that the Sharpshooter has ONLY rifles and the Gunslinger has ONLY pistols. Giving the Sharp access to revolvers is interesting as a more effective way to control crowds when using the Railgun, but I also think it's unfair as a take-away from the Gunslinger.
If Sharp got their own dedicated handgun it could be interesting. Something weaker than the LAR but lighter and faster. Here's a fun idea, what about a .22 pistol like a Ruger 22/45 or a Browning Buckmark? Make it pretty damn weak but with a ridiculous headshot bonus so a whole mag to the chest will drop a clot but at the same time only one headshot will stop him? Ammo is dirt cheap, but don't let me carry a billion rounds.
If not, then something renowned for accuracy would be good. I'd say give Sharp the 1911. Accurate, quick, medium power, but then replace them in the Gunslinger perk with Glock 23s or something. And give the Sharp A 1911. It'll be a nice tactical choice vs the LAR since it won't have near the headshot power but can deal with crowds better.
And that's it.