Sprinco Blue Enhanced Power Buffer Spring

The Sprinco Blue Enhanced Power buffer spring represents the most popular upgrade spring for AR-15 carbines running suppressors or experiencing overgassing. Engineered with approximately 15% greater spring load than mil-spec white springs, the Blue spring adds resistance to slow bolt carrier velocity without resorting to extremely heavy buffers or adjustable gas blocks. This balanced approach to gas tuning delivers noticeable improvements in recoil feel and reliability while maintaining the simplicity of a drop-in component.

Manufactured from ASTM Grade A877 certified valve quality chrome silicon wire stock, the Sprinco Blue undergoes heat treatment, stress relief, and dual-stage shot-peening post-winding to ensure consistent performance across tens of thousands of cycles. The enhanced construction resists spring set and fatigue far better than standard mil-spec springs, maintaining proper tension over extended service life. Weighing approximately 0.75 ounces, the Blue spring works optimally with mid-length gas systems on 12.5-16 inch barrels when paired with standard or H2 buffer weights.

In practice, the Sprinco Blue spring transforms overgassed carbines by smoothing out the recoil impulse and reducing the sharp snap common with standard springs. Shooters report better ejection patterns, reduced brass damage, and less felt recoil when pairing the Blue spring with an H2 buffer. This combination has become the de facto standard recommendation for suppressed AR-15s with mid-length gas systems, offering reliable function without the complexity and potential failure points of adjustable gas systems.