The F2™ poppet valve is available in two levels — Red and Gold — letting you tune the system for your specific build.
Red – Standard
The Red valve is the standard poppet that ships with the F2™ and provides the maximum amount of airflow through the system. Well suited for builds operating at field velocity limits.
Gold – Low Flow
The optional Gold valve expands the F2's™ tuning capabilities further. Swapping the standard Red poppet for the Low Flow Gold poppet shifts the velocity adjustment window down, letting the system run at a higher pressure while retaining lower velocity. This is especially useful for longer-barreled rifles that need a lower velocity than the F2's™ normal pressure range allows, or to maintain reliable feeding with the heavy spring and heavy BBs without exceeding the velocity limit.
Performance was benchmarked across a range of pressures and BB weights using a 6.05×380mm barrel.
Parts and accessories ship within 7 business days. Custom HPA rifle builds take up to 45 business days (often less). Need it sooner? Contact us to check current stock.
All sales on parts and accessories are final once shipped. Defective or damaged items are covered under the KA Tech Warranty.