This is a resin casting of the hero "Merc" pistol.
It's a clamshell affair that mounts over a S&W "K" frame revolver.
It's painted with testors metalizer aluminum and weathered with a black wash. The custom trigger guard is aluminum and all the screws and hardware are threaded into the resin and hold nicely.Comparison pic against a Beretta...the merc pistol is a big chunk of gun!