37MM Flash Concussion Round - I.W.A International Inc
37mm Chalk Marking Rounds Kit
Is it legal to get an M79 grenade launcher? If yes where would I go about getting one? - Quora
Eggs for 37MM High Pressure Chalk Round Type "A" and "B" | EF Industries LLC
Destructive Devices - 40mm Launchers - Topic
Engineered Arms on X: "Big (bore) things are happening over at @awcy_arms. # 37mm is a #nonfirearm when using ONLY #flare, #smoke, or #chalk rounds. Time for a #garagepop. #largebore" / X