The Ketsurui Fleet Yards Ke-M2-W2905 Shoulder-Fired 50mm Gauss Cannon (derived from the Kylie's M3-W2708) is approximately 4 feet long and is attached to a small, movable arm over the shoulder hardpoint. It can pivot up, down, and side-to-side as well as 45 degrees rearward, allowing it to fire hands-free at any target to the front or above from a standing position, or to be used as a shoulder-fired sniper weapons from a prone position. When not in use, the rail gun compacts itself and lowers down into position over the 'shoulder blade' area of the power armor. Up to two Gauss cannons may be attached, on either shoulder hardpoints.

• Primary Purpose: Anti-Armor via kinetic energy damage
• Secondary Purpose: Indirect Fire
• Damage: Tier 7, Light Anti-Mecha or Medium Anti-Mecha. Kills occupants of other armors by piercing and explosive force or by kinetic energy (Zesuaium armored units)
• Range: 30,000m (18.6 miles)
• Rate of Fire: Single fire or three-round burst. 6 rounds a second.
• Payload 18 rounds in a helical magazine. Optional backpack extension increases capacity to 78 rounds.

Date entered service: YE 29