Tuning Spring – Milsig M17 / Valken M17

Individual performance tuning springs for the Milsig M17 and Valken M17 / CQMF platforms. Each spring sold separately — pick exactly what your build needs.
Tuning Bolt Spring ($25) — Reinforced steel bolt spring replacing the stock spring for up to 200% performance increase depending on your marker’s setup. Highly robust, resistant to bending under high-pressure cycles.
Bolt Locking Spring ($10) — Adds extra reliability and consistency during high-pressure firing cycles. Direct replacement for the stock bolt locking spring.
Sear Spring ($10) — Enhances trigger response and consistency. Engineered for reliable cycling and improved feel across firing cycles.
All springs are heat-treated steel, engineered for the Milsig M17 and Valken M17 / CQMF platforms. Compatible with 900 PSI inlet pressure setups.