The SRM Arms Model 1216 is a semi-automatic shotgun with a 4-tube rotary magazine system carrying 16 rounds total. Each tube holds 4 shells; after firing 4 rounds a manual rotation advances the next tube. The bullpup layout places the action behind the grip. The 1216 is one of the highest-capacity self-loading shotguns commercially produced in the US. Type: Shotgun Action: Semi-Automatic Caliber: 12 Gauge Capacity: 16 Year introduced: 2012, USA Weight: 112 oz Overall length: 26.5" Status: Active Intended use: tactical, competition, sporting