KAC Masterkey

🔑 KAC Masterkey – Under‑Barrel Tactical Breaching Shotgun

Overview

The KAC Masterkey is a rugged, compact 12‑gauge pump-action shotgun designed by Knight’s Armament Company. Developed in the 1980s for special forces door-breaching missions, it mounts securely under an M4/M16 rifle barrel—delivering both rifle and shotgun power in one streamlined system.

✅ Key Features

• Under‑Barrel Integration – Attaches using a quick-detach bracket similar to the M203 grenade launcher; transitions smoothly between rifle and shotgun.
• Compact & Lightweight – Measures around 43.2 cm (17 in) and weighs approximately 2.6 kg (5.7 lb) unloaded.
• 4‑Round Capacity – Holds three 12 ga shells in the tubular magazine, plus one in the chamber.
• Pump‑Action Reliability – Built on a shortened Remington 870, known for rugged field performance.
• Modular Stand‑Alone Option – Compatible with KAC’s standalone stock unit, enabling independent shotgun use when detached from the host rifle.

🛠️ Tactical Design & Utility

• Built for Breaching – The name “Masterkey” reflects its role in “unlocking” fortified doors quickly and effectively.
• Ergonomic Host-Rifle Grip – Uses the rifle’s magazine as a makeshift grip; front-heavy design noted by operators but engineered for stability.
• Mounting Flexibility – Quick-detach front mount allows weapon reconfiguration on the fly.
• Legacy Platform – Directly influenced the modern M26 MASS, showcasing the Masterkey’s innovative foundation.

📌 Who It’s For

• Elite Military Units – Ideal for special-ops and SOCOM teams requiring fast, integrated breaching solutions.
• Law Enforcement SWAT – Perfect for dynamic entry operators needing compact power without extra bulk.
• Firearm Collectors – A historical piece representing early modular breaching shotgun evolution.

⚙️ Specifications

All specs per Knight’s Armament and Weaponsystems.net sources.

🌟 Why Choose the KAC Masterkey?

1. Integrated Breaching Power – Combines shotgun functionality and rifle readiness in one setup.
2. Battle-Proven Design – Built on the trusted Remington 870 platform, adapted for compact under-barrel use.
3. Quick Configuration – Fast-change mount enables adaptive setup in the field.
4. Innovative History – Pioneered the concept behind the M26 modular breaching system used by the U.S. Army.

🔄 Call to Action

Interested in the KAC Masterkey?

Need documentation or shipping info? Reach out now—our team will assist with compliance guidance, export paperwork, and tactical integration advice.