Engineered for superior performance, reliability, and durability.

This upgraded high-strength magazine spring is specifically designed for Systema PTW magazines, replacing the original two-piece spring system with a more efficient and reliable single-piece design.

Manufactured from a special high-performance alloy, it provides improved elasticity, superior tension retention, and increased resistance to fatigue, ensuring consistent BB feeding even under demanding conditions.

Successfully tested with heavy 0.40g BBs, delivering smooth and reliable feeding without jams.

An essential upgrade for PTW setups equipped with brushless motors, particularly high-speed and high-performance configurations where consistent and reliable ammunition feeding is critical.

Key Features:

Upgraded single-piece design replacing the original two-spring system.

Special high-performance alloy construction.

Improved elasticity and long-term tension retention.

Increased resistance to spring fatigue.

Reliable feeding tested with 0.40g BBs.

Essential for high-performance brushless motor setups.

Compatible with Systema PTW 120-round magazines.

Package Contents:

Each set includes 5 high-strength magazine springs, enough to upgrade 5 PTW magazines.

Maximum feeding reliability for demanding PTW builds.