Helper Spring C/O 2.5in 5.0in Tall 50lb

The SWIFT SPRINGS Helper Spring C/O 2.5in 5.0in Tall 50lb (Model H025-152-050) is a precision coil spring engineered for take-up duty in rifle platforms and other mechanical systems requiring consistent load management. This steel helper spring features a 2.5-inch inner diameter, 5-inch compressed length, and a 50-pound spring rate, with a durable black powder coat finish designed to resist corrosion in field conditions.

At 1.8 pounds and measuring 4.5 x 4.3 x 7.4 inches, this helper spring delivers predictable load characteristics across its operating range. The 50-pound rate provides sufficient bias force for applications where preload consistency matters—whether managing hammer spring tension, buffer tube dynamics, or component take-up in modular assemblies. The black powder coat protects against rust and wear while maintaining dimensional stability under repeated cycling.

This spring is specified for precision gunsmithing, custom build work, and OEM mechanical assembly where spring rate consistency is non-negotiable. Operators and armorers building or tuning rifle systems rely on SWIFT SPRINGS products for their tolerance accuracy and material consistency. The 5-inch height and 2.5-inch bore make this spring compatible with standard buffer tube systems and similar take-up applications requiring intermediate spring rates.

Helper springs in the 50-pound range occupy a middle ground between light and heavy preload duties, making them versatile for tuning systems that demand moderate bias force without excessive stack height. The black powder coat finish resists salt-air corrosion and handling wear, critical for both range and field deployments.