VFC M4/416 "Ion" Winter Recoil Spring

The One Spring You Need For Efficiency All Year-Round

Boost your rifle’s performance year-round with the Waldo Dynamics Winter Recoil Spring, precision-engineered for the VFC 416 and M4 GBB platforms. Designed at 85% strength, this recoil spring delivers the perfect balance between efficiency and snappiness (making it ideal for cold weather use without compromising reliable cycling in warmer conditions).

The reduced tension improves gas efficiency, allowing your rifle to operate more consistently in lower temperatures, while still retaining a crisp, realistic recoil feel. Whether you're skirmishing in snow or just want smoother action during high-speed play, this spring keeps your setup responsive.

Finished in a distinctive blue coating, the finish not only reduces friction (giving you a butter smooth shooting experience) but it also helps you tell it apart from other springs you may have.

Key Features:

• Compatible with VFC 416 / M4 gas blowback rifles (as well as other WA derivatives)

• 85% power rating for improved cold-weather performance and gas efficiency

• Blue friction-reducing coating for smoother cycling, durability, and identification

• Retains snappy, responsive action across a wide temperature range

• Ideal for players running gas rifles in winter environments or looking to maximise their gas efficiency

Trusted by techs and field-tested by serious players, the Waldo Dynamics Winter Recoil Spring is your go-to upgrade for seasonal performance without compromise.

The end of the spring with the most coils is the side that receives the recoil buffer (as illustrated in the product photos). This product does not include a recoil buffer.