Vipertech Buffer spring (regular/medium/winter)

Three strength options to match your setup and conditions.

Magnum (110%) — Increases spring tension above stock for a harder-hitting cycle. Use with a properly tuned gas system.

Regular (100%) — Matches factory spring tension. Use to replace a worn stock spring without changing how the gun cycles.

Cold Weather (85%) — Reduced tension to compensate for lower gas pressure in cold temperatures. Helps maintain reliable cycling in winter conditions.

Each spring has a PVD coating and is stainless steel.