Check the listing for details. HK Army AeroLite Pro Regulator - Adjustable & Rotational -Green. Condition: New with tags. Listed at 119.95 USD. The AeroLite Pro Regulator is engineered and built to be the most advanced, reliable, and consistent tank regulator available. The innovative design allows the user to quickly and easily adjust the output pressure with the simple swap colored shims. The body and internal components are fabricated in the USA using premier grade aircraft aluminum and advanced machining processes. Each Regulator is hand assembled in the USA and must pass a thorough quality control test prior to being approved for release. The AeroLite Pro Regulator is not only built with performance in mind, but also convenience. The rotational top threaded cap provides the flexibility of choosing the optimal location for the gauge and fill nipple, allowing for maximum comfort during play. Features: LE Custom Anodizing Exo zipper regulator case with carabiner clip Rotational Threaded Regulator Cap for Ideal Gauge/Fill Nipple Placement Pressure Piston with Shims for precise output pressure adjustments(output pressure 450-650psi) Constructed with Lite-Weight Aircraft Grade Aluminum 1.8K and 7.5K Burst Disks for Safety Protective rubber valve cover to keep debris out Consistent Flow Output Pressure Dual O-rings PSI Pressure Fill Level Gauge Patented Technology Made in USA Listing and template services provided by inkFrog