gas_gun has definitions from the field of arms
1
[ noun ] (arms) a gun that fires gas shells

Used in print

(Breni James, Nights of the Kill....)

He walked up_to the lieutenant 's office , leaned wearily against the gun rack that housed four rifles and a gas_gun nobody remembered having used and a submachine_gun that was occasionally tried_out on the Academy_Range .

Related terms

gun

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