Light AA weapon. Also a Hotchkiss design, and suffering from many of the same inadequacies as its larger 25mm cousin, as well as a very heavy, unwieldy free-swinging single mount.
| Bore | 13.2 mm |
| Weight | 92.2 lbs. |
| Length OA | 55.5 inches |
| Weight Projectile | 1.57-1.83 oz. |
| Muzzle Velocity | 2641 ft/s |
| Max. Elevation | +85/-15 degrees |
| Max. Range | 6,560 yards 13,060 ft. max. ceiling. |
| Rate of Fire | 425-475/min |
