Most of the Weapon Props in Target Assassin where Plastic 6mm BB Guns
With the exception of the silver Baretta 92F (which was a cigaret lighter)
and the G-10 Air Pistol carried by Bob Williams in the shoulder holster.
Only those two weapons were metal, there was no access to blank firing weapons on this movie.
All muzzle flashes and sound effects where added in post edit.
The Hand Guns
These where the hand guns used in Target Assassin
(all are plastic besides the Silver Baretta 92F)
Silver Baretta 92F
Baretta M93R & Silencer
G-10 1.77 Air Pistol
The Machine Guns
These where the machine guns used in
Target Assassin (all are plastic)