Tuning Spring – FSC / TCP / VKS / TRP / T8.1 / T9.1

Performance tuning springs for First Strike FSC, TCP, VKS, TRP, Tiberius T8.1, and T9.1 platforms. Each spring targets a specific function — choose the one that matches your upgrade goal.
Magazine Spring ($5.99) — First Strike ready magazine spring for heavier projectiles. Fits FSC, TRP, TCP, T8.1, and T9.1. Improves feed reliability with First Strike and JOULES rounds.
Sear Spring ($9) — Power upgrade spring for improved reliability, output, and launcher longevity. More robust with greater tolerance than stock. Compatible with FSC, TCP, VKS, and TRP.
Velocity Adjuster Spring ($8) — 33.5mm regulator spring for tuning velocity and power output. Makes a measurable difference in performance. Compatible with FSC, TCP, VKS, T8.1, and T9.1.
Tuning Bolt Spring ($20) — Reinforced bolt spring for up to 200% performance increase depending on setup. No bending or deformation under high-pressure cycles. Compatible with FSC, T8.1, T9.1, and VKS.
AR Tactical quality. Built for less-lethal and paintball platforms.