SHS M100 AEG Upgrade Spring (TH1023)

Achieving consistent power output and reliable cycle timing is the foundation of any high-performance AEG build. The SHS M100 AEG Upgrade Spring (TH1023) offers a high-strength, non-linear spring solution engineered to optimize power delivery while preserving internal gearbox health.

Non-Linear Pitch Design for Gearbox Longevity

Unlike traditional linear springs that compress uniformly and place heavy initial resistance on the motor and gears, the SHS M100 features an irregular pitch (non-linear) winding. This variable spacing lowers resistance during the initial stage of the compression stroke, easing motor startup torque and reducing mechanical stress on the piston teeth, spur gears, and gearbox shell. As the piston reaches the back of its stroke, the spring coils compress progressively, providing maximum kinetic energy upon release for punchy, consistent air volume.

Premium Alloy Steel Construction & Power Output

Manufactured from high-tensile, heat-treated silicon-chromium steel wire, the TH1023 spring resists power degradation and tension loss over thousands of cycles. Designed to sit near standard CQB and general field limits, an M100 rating typically yields around 330 to 350 FPS when installed in a gearbox with good compression and proper nozzle alignment. Ground flat at both ends, the spring sits square against the spring guide and piston head to eliminate binding, twisting, and uneven spring guide wear.

Universal Compatibility & Simple Upgrade Path

The SHS M100 spring is compatible with standard AEG gearboxes (Version 2, Version 3, Version 6, and similar platforms). Whether you are replacing a worn-out factory spring, lowering power to hit strict field velocity limits, or fine-tuning a custom build, this drop-in upgrade offers the durability and performance airsoft technicians depend on.

Key Features & Technical Benefits:

• Non-Linear Coiling: Irregular pitch design reduces startup load on motor and gear teeth.

• Target Output: Yields approximately 330–350 FPS on setups with solid air seal.

• High-Tensile Steel Build: Heat-treated alloy construction prevents power drop and sagging over time.

• Flat-Ground Ends: Ensures flush seating on piston heads and spring guide bearings to prevent binding.

• Universal AEG Spec: Fits standard Version 2, Version 3, and related AEG gearbox shells.