HK Army Alpha Air “Hostile” 15/4500 HP8 Air System – Paintball & Airsoft HPA Tank

The HK Army Alpha Air “Hostile” 15/4500 Air System is a compact, lightweight carbon fiber HPA tank designed for paintball and airsoft players who want maximum mobility without sacrificing high-pressure performance. With a 15 cubic inch capacity and 4500 PSI fill rating, this air system delivers strong performance in a smaller, easier-to-carry package than traditional larger tanks.

Built for speed, balance, and reduced weight, the Alpha Air 15/4500 is ideal for pump paintball, magfed paintball, HPA airsoft, and compact rifle setups where a smaller tank improves handling. Its painted carbon fiber wrap and Hostile graphics give it a premium look while keeping the bottle extremely lightweight. HK Army lists the 15ci bottle at 1.95" diameter, 8.5" length, and 8 oz bottle-only weight.

This air system is available with HK Army regulator options such as the HP8 standard regulator, which is designed for paintball and airsoft use with an approximately 800 PSI output. The compact 15ci size makes it a strong choice for players using Air-Link tank systems, remote lines, smaller magfed builds, or lightweight HPA airsoft loadouts.

Designed for safety and long-term use, the Alpha Air system features a 5-year hydro certification and is built to DOT/TC-UN safety standards for use in the USA, Europe, and Canada. Whether you’re building a lightweight paintball setup or powering an HPA airsoft rifle, the Alpha Air “Hostile” 15/4500 offers a compact, premium air source built for serious field use.

Features

• Compact 15ci / 4500 PSI HPA air system
• Designed for paintball and airsoft use
• Lightweight carbon fiber bottle construction
• Hostile graphic wrap for premium styling
• Ideal for pump, magfed, remote line, and HPA airsoft setups
• Smaller profile improves mobility and handling
• Compatible with standard paintball ASA systems
• Available with HK Army regulator options such as HP8 or PRO
• 5-year hydro certification
• Built to DOT/TC-UN safety standards

Specs

• Tank Size: 15ci
• Fill Pressure: 4500 PSI
• Tank Type: Carbon Fiber HPA Tank
• Diameter: 1.95"
• Length: 8.5"
• Bottle Weight: 8 oz
• Weight with Regulator: Approx. 14.9 oz
• Regulator Output: HP8 approx. 800 PSI / PRO regulator varies by model
• Hydro Certification: 5 Years
• Use Case: Paintball, Magfed Paintball, HPA Airsoft, Pump Play