M66 Power Kit (ASA+spring)

M66 Power Kit (Unregulated ASA + Heavy Spring)

The M66 Power Kit is an ultimate performance upgrade designed to unlock maximum power and range for the M66 grenade launcher. By replacing the standard regulated setup with an unregulated, direct-flow ASA and a stiffened drive spring, this system routes raw pressure directly to the launcher valve.

Package Includes

• 1x Unregulated Direct-Flow ASA

• 1x High-Tension Heavy Spring

Key Features

• Maximum Power Output: Eliminates pressure regulation, allowing shot power to be driven directly by your air system’s raw output pressure.

• Heavy-Duty Spring: Upgraded high-tension spring ensures crisp, reliable valve striking even under high internal operating pressures.

• Heavy Payload Optimized: Engineered specifically to push heavy tactical projectiles (60g+) for optimal trajectory and maximum accuracy.

Important Operating & Safety Guidelines

• Maximum Pressure Limit: Do not exceed 1100 PSI input pressure under any circumstances.

• Degassing & Air Removal: The ASA does not feature an integrated pressure release valve or purge screw. It is strongly recommended to use an HPA setup equipped with an ON/OFF degassing valve. Alternatively, remaining pressure must be safely dry-fired to depressurize the system before disconnecting.

• Ammunition & Cartridge Compatibility: Standard paintball and airsoft cartridges cannot be used with this high-power setup. Use only heavy projectiles (60g+) to achieve proper flight dynamics and accuracy.

• CO2 Usage Warning: Because this setup operates unregulated, running CO2 requires an angled antifreeze adapter to prevent liquid CO2 from entering and freezing the internal valve. Always pair this kit with the Angled ASA Adapter MCCA (CO2 Antifreeze) when operating on CO2.