ra-tech

RA-TECH is a specialist manufacturer of airsoft replica upgrade components, with a focus on gas blowback systems. The brand produces NPAS (Nozzle and Piston Assembly System) nozzles, valves, and recoil buffers designed for GBB and GBBR platforms. Their catalogue covers a wide range of airsoft replicas, including M4, M1A/M14, SCAR, and AK variants from manufacturers such as WE, KWA, GHK, VFC, and Marui.

The product lines differ in material, locking mechanism, and compatibility. NPAS nozzles are available in adjustable and fixed versions, with magnetic locking systems for faster, smoother operation. Some models feature CNC-machined aluminum bodies, while others use high-strength polymers. The recoil buffers come in steel and aluminum, with spring weights ranging from 1.6 kg to 3.3 kg, each designed for specific gas blowback actions.

When selecting parts, verify the exact platform, generation, and nozzle type. Check the product page for compatibility details, as NPAS nozzles are not universally interchangeable. Confirm your airsoft replica's make, model, and internal specifications before purchasing.