The PSDR-3 is essentially a suppressed Smith & Wesson Model 625. The barrel is totally encased by the huge suppressor, which is filled with baffles. The suppressor also covers the cylinder, but folds open via a trapdoor to allow reloading. The PSDR-3 is also fitted with a scope, since the suppressor covers the iron sights. Although unwieldy, the PSDR-3 is reportedly a very silent weapon, and one of the world's first truly suppressed revolvers. It is not available for sale commercially, and was built in limited numbers.