The Ithaca Model 37 Defense is the tactical/law enforcement configuration with an 18.5-inch barrel and bottom-ejecting action. Bottom ejection is particularly advantageous in close quarters. Used historically by the NYPD and other agencies. Cylinder bore. Type: Pump Shotgun Action: Pump-Action Caliber: 12 Gauge Capacity: 5 Year introduced: 1960, USA Weight: 6.5 oz Overall length: 28" Status: Active Intended use: Home Defense, Tactical, Law Enforcement