Due to the shotgun's extended magazine, it is unable to be fitted with a bayonet. It comes with an extended magazine, giving the shotgun an 8-shell capacity (7+1). The Ithaca M37 Shotgun: 'Duckbill' Conversion is similar to the standard Trench Gun variant except the shotgun has been modified with a 'Duckbill' muzzle spreader, which gives the weapon a horizontal spread. The shotgun excels in short-medium range engagements needing only one or two shots to. There are no fixed iron sights as the weapon is aimed from the side of the shotgun. The Ithaca M37 Shotgun is the standard pump-action shotgun used by the Americans in Rising Storm 2: Vietnam. It comes with 35 shells and has a 5-shell capacity (4+1). The shotgun has the ability to fire two types of ammunition, being 00 Buckshot and No.4 Buckshot. It has a pistol-grip with no stock which improves the time for ADS at the expense of not being able to aim accurately. The Ithaca M37 Shotgun: 'Stakeout' Riot Gun is a smaller variant of the standard shotgun. The shotgun is able to affix a bayonet to the front, allowing for melee combat, with a slight reduction to ADS stability. It has the ability to fire two types of ammunition, being 00 Buckshot Shells and No.4 Buckshot Shells. The Ithaca M37 Shotgun: Trench Gun is the standard pump-action shotgun variant. The shotgun comes in three variants, each with their own distinct advantages and disadvantages. 4 Buckshot fires twenty-four small birdshot pellets, which increases the chance of hitting the target, with the downside of weaker damage output and less penetration.

00 Buckshot Shells are the standard shotgun ammunition, firing nine large pellets, capable of penetrating weak cover.The shotgun is chambered in 12-Gauge - two different ammunition types are offered for the shotgun, with one being 00 Buckshot and the other No.4 Buckshot: The shotgun excels in short-medium range engagements needing only one or two shots to take out an enemy from medium range. The Ithaca M37 Shotgun is the standard pump-action shotgun used by the Americans in Rising Storm 2: Vietnam. An American soldier aims an Ithaca M37 Trench Gun fitted with a bayonet.

Ithaca 37 shotgun sight