Hi-Capa 5.1/4.3 AIP 120% Upgraded Recoil & Hammer Spring Kit

Marui Hi-Capa 5.1/4.3 GBB Recoil & Hammer Spring Upgrade Kit: Boost Realism and Power

Looking to elevate your Marui Hi-Capa 5.1 or 4.3 Airsoft Gas Blowback (GBB) pistol’s realism and firepower? This Recoil & Hammer Spring Upgrade Kit is engineered specifically for these popular models to deliver an immersive shooting experience tailored to your needs. Designed to work seamlessly alongside metal slide/outer barrel upgrades and high-flow blowoff valves, this kit optimizes both responsiveness and power output—key factors for serious airsoft enthusiasts seeking competitive edge or cinematic realism.

The recoil spring amplifies the blowback force and accelerates cycling speed, creating a more intense tactile feedback that mimics real firearms more accurately than standard springs. Meanwhile, the hammer spring increases tension within the gas system, resulting in higher velocity (FPS) by maximizing gas efficiency—a must-have for players wanting consistent power during rapid firing scenarios or long-range engagements. When paired with compatible upgrades like a high-flow blowoff valve or reinforced slide assembly, this kit ensures smoother operation while reducing wear on internal components over time.

Perfect for customizing your airsoft setup without compromising reliability, these springs are crafted from durable materials to handle heavy use during simulations or field play. Whether you’re upgrading for faster follow-up shots or enhanced gas performance, this kit addresses common limitations of stock configurations while maintaining compatibility with your existing build.

While straightforward for experienced users familiar with GBB modifications, proper installation requires precision alignment with your pistol’s internals. For optimal results, we recommend consulting an airsoft professional or detailed guides if you’re new to spring swaps or system tuning.

Elevate your Marui Hi-Capa’s authenticity and power output with this specialized upgrade—designed by players for players who demand top-tier performance from their gas-powered sidearm setup.