The Zantetsu Sword is a knife that imbues your physical weapon attack with large waves of energy, powerful enough to destroy armored vehicles. It can cut through the enemy's bullets and weaponry, at the cost of a low ammo count, so use it wisely.
Unlike other secondary weapons, the Zantetsu Sword can only be fired sideways.
|Metal Slug 6||Easy||20||30||10||N/A|
|Metal Slug 7/XX||Beginner||20||30||10||24|
- Zantetsu (斬鉄, Zantetsu) is japanese for "iron-cutting", making this weapon an "Iron Cutting Sword". It is a popular weapon name encountered in many videogames, such as the recurring Zantetsuken (斬鉄剣, Zantetsuken) (also "Iron Cutting Sword") from the Final Fantasy series.
- If equipped by Ralf, the power of Zantetsu Sword is much stronger.
- If shot correctly, Zantetsu Sword is the strongest weapon in the Metal Slug Series.
|Standard||Handgun (Murder .50AE | Murder Model-1915 .38 Mk.1Am) | AR-10 | M-3685 | M60|
|Limited|| Heavy Machine Gun | Rocket Launcher | Flame Shot | Shotgun | Laser Gun | Iron Lizard | Super Grenade | Enemy Chaser | Drop Shot | Two Machine Guns | Zantetsu Sword | Thunder Shot|
|Bombs||Grenade | Fire Bomb | Stone | Earring Bomb | Smoke Bomb | Monolith | Snowball|
|Melee||Knife | Tonfa | Hatchet | Tomahawk | Punching Glove | Stun Gun | Wrench | Vulcan Punch | Argentine Backbreaker | Moon Slasher|
|Other||AA Machine Gun | Thunder Cloud | Mobile Satellite|