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SRM Arms Model 1216

Semi-Automatic Shotgun [ 2016 ]

The SRM Arms Model 1216 shotgun makes use of a four-tube arrangement, allowing operators to carry four ammunition types at once.

Authored By: Staff Writer | Last Edited: 06/07/2017 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

The shotgun market has seen a considerable evolution in the last decade or so with various models incorporating multiple barrels, automatic fire modes and other features typically not common to this line of weapon. SRM Arms produces the Model 1216 shotgun, a 12-guage semi-automatic design sporting a polymer stock, Picatinny accessory rails and a four-tube magazine.

Perhaps the most notable quality of this firearm is the aforementioned magazine consisting of four, spring-loaded tubes holding the shells in a rotary-style arrangement. The tubes are mounted in parallel to the gun, just under the barrel assembly, and contain up to four 12-guage shells (model dependent). The shotgun, therefore, can carry a maximum of sixteen shells and each tube can house different shell types to suit the mission need. The operator retains complete control over which tube is feeding the subsequent shells into the action during fire. All controls can be flipped for left-handed shooters and the Picatinny rail mounts support various tactical accessories.

There are three major variants in the Model 1216 lineup and this includes the base, full-length Model 1216. The Model 1212 is given a shortened barrel length (13") and has its overall length accordingly reduced to 27.5". However, the ammunition tubes hold only three shells apiece so overall shell count is reduced as a result (to 12 shots). The Model 1208 is a shorter-barreled version of the Model 1216 and has a 10" barrel with overall length reduced to 24.5". This, therefore, reduces the ammunition capacity again to eight total shells in the four available tubes. Weight of the three guns is 7.25lb, 6.75lb and 6.25lb respectively and all feature the same semi-automatic , roller-delayed blowback system of operation. Shot types supported include slugs, #00 Buck, trap loads, game loads and specialty rounds (in 12-guage, 2 3/4" and 3" shells per manufacturer specs). Disassembly is via a push-pin.


Service Year

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United States


Semi-Automatic Shotgun

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(OPERATORS list includes past, present, and future operators when applicable)
Close Support
Extreme close quarters use; trench-clearing; doorbuster; security.

Overall Length
825 mm
32.48 in
Barrel Length
457 mm
17.99 in
Empty Wgt
7.28 lb
3.30 kg

Supported Optics


Roller-Delayed Blowback; Semi-Automatic Fire

One shot per trigger pull; self-loading or auto-loading action aided by internal mechanism; trigger management (and initial cocking) typically required by the operator; subsequent shots are aided by the unlocked / moved bolt.
Blowback Operation
Gas pressure from the rearward movement of the ignited cartridge case provides the needed bolt movement, ejecting the spent case and stripping a fresh case from the magazine.
(Material presented above is for historical and entertainment value and should not be construed as usable for hardware restoration, maintenance, or general operation - always consult official manufacturer sources for such information)



Sample Visuals**

Graphical image of a 12-gauge shotgun shell
Rounds / Feed

16-, 12- or 8-round capacity (model dependent).
Cartridge relative size chart
*May not represent an exhuastive list; calibers are model-specific dependent, always consult official manufacturer sources.
**Graphics not to actual size; not all cartridges may be represented visually; graphics intended for general reference only.

Model 1216 - Base Series Model; 32.5" length; 7.25lb weight; 16-round ammunition count.
Model 1212 - 27.5" length; 6.75lb weight; 12-round ammunition count.
Model 1208 - 24.5" length; 6.25lb weight; 8-round ammunition count.

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Images Gallery

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Image from official SRM Arms marketing material.


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