M37 converted directly from the Metal Gear Solid 3: Snake Eater game.

The model and texture are original, both extracted directly from the original game folder. In addition, every effort was made to realistically allocate the weapon in CJ's hands.

Original description of the M37 in Metal Gear Solid 3: Snake Eater:

The M37. An American-made shotgun. The stock and barrel have been sawed off to reduce the weight. Carries four 12-gauge shells. 2.9kg.