The Rohm RG (also known as the "RG-8", the RG Model 8, or the Mod.RG-8) is an 8mm Blank-firing semi-automatic handgun manufactured and distributed by German gun maker Röhm Gesellschaft, and its American division RG Industries (though it's unknown if this model was ever sold on the U.S. market).
Movies / Film
Royal Warriors (1986) - also known as "In the Line of Duty"
The Rohm RG8 pistol was featured in Hong Kong action film "Royal Warriors" (A.K.A. "In the Line of Duty"), and is carried by security guard Michael Wong in an ankle holster as his duty weapon. Of course, the irony being that in real life, it's actually a gun that fires 8mm blanks.
Crime Spree (2003)
In the 2003 French film "Crime Spree", the characters Julien and Raymond are both seen shooting a Rohm RG8.