BEHOLD the LEGENDARY Ithaca M37 Police Riot Gun! Manufactured in 1968, all original, pretty much mint condition, Knoxville PD gun and yes, it does SLAM FIRE ! : Shotguns
Inland Manufacturing M37 Trench Shotgun
Ithaca 37 - Wikipedia
Sawed Off Ithaca M37 by thesketchydude13 on DeviantArt