From Marvel Comics The Punisher Armory No 2

Flare Guns – Page 31:

“I not only never forgot that little episode, I leaned more about flare guns, That gawky pistol is a big. tough WWII Webley & Scott 37mm “signal projector.” So reliable I elected to hold onto it even though the huge variety of new flare cartridges are NATO standard 26.5mm.

So those two cylinders under the barrel are 37mm- to-26.5mm and 37mm-to-12 gauge shell adapters. Right next to them are 12 ga. noisemakers. Back of the butt are 6 37mm “Air Burst Simulators” which make a vary loud bang for when l want to rattle cages. At bottom is a 26.5mm “4 stars red” signal cartridge. Oh yeah; I sewed up that nylon bag after a day’s shopping spree in New York’s Garment District.

That little stamped-metal pistol (broken open) is what they hand out at NATO today – hummph. I also decided I wanted to see the inside of one of those 26.5mm parachute flares. Pretty cute. huh? The little fins pop out when it clears the tube.”

Published by Marvel Comics in The Punisher Armory No. 2, June, 1991