This seems very unlikely. A VP is an exotic weapon that would be difficult to obtain, and relatively few gun sellers/distributors would have one in stock. For those wondering, a VP differs from a standard pistol quite significantly. Most ordinary handguns are either slide-based guns or revolvers. If you've seen a 1911 or a Beretta or whatever, the slide is just the part at the top of the gun that moves back and forth when you fire, and you all already know what a revolver is. A VP on the other hand is actually neither - while the design resembles one of the slide pistols, it's completely manually operated, essentially a bolt-action handgun. This is deliberate - the sound of the slide slamming back and forth between shots is actually quite loud once you deal with the noise from the explosion, and the opening where the brass casing is ejected also provides a route for gas to escape the chamber without going through the suppressor, so making it manually operated removes a source of noise. The design is very similar to the Welrod pistol developed for use by British special forces in WW2. Basically I'm saying this is a really weird gun that has very little purpose outside of murking people and it's very unlikely he had one.
 
Also worth noting, in regards to US firearms law, suppressed weapons and suppressors join automatic weapons, explosives, anti-material rifles, and sawed off rifles/shotguns as one of the few kinds of firearms that are restricted. You have to register with the government in order to legally purchase one. What does this mean? If this were an ordinary handgun, he could purchase the gun legally without registering and either source a generic suppressor from the black market or manufacture one himself to screw onto the muzzle. The VP however has an integral suppressor - it's not an addon or accessory, it's built right into the gun, you can't get a VP without it. This means you'd have to get the whole unit as a package deal, either from the black market (with great difficulty, as this is an exotic item), by stealing from an existing owner, or by registering and purchasing one legally, which is much more difficult and expensive.