1.255 Valve Spring (1) Single w/o Damper

The 1.255 Valve Spring (1) Single without Damper by ELGIN (MPN: RV-9943X) is a precision engine component engineered for shooters and armorsmiths who demand reliable firearm performance in demanding conditions. This single valve spring is designed for platforms requiring a lightweight, high-cycle spring without integral damping, making it ideal for custom builds, competition systems, and duty weapons where spring rate consistency directly impacts bolt carrier velocity and reliability.

Built to ELGIN's exacting standards, this 1.255-diameter valve spring operates without a damper, allowing shooters to fine-tune cycling behavior through precise spring rate selection and buffer system configuration. The absence of damping means the spring delivers direct, unfiltered force transmission—critical for maintaining consistent bolt lockup timing and carrier deceleration. At just 0.18 lbs and measuring 1.7 x 1.4 x 4.05 inches, the compact profile integrates seamlessly into standard receiver geometry while maintaining the durability required for sustained fire applications.

Law enforcement armorer-level users and mil-spec platform builders benefit most from this undamped spring configuration, particularly those optimizing suppressed or short-barrel upper assemblies where bolt velocity control is critical. Installation requires proper receiver alignment and complementary buffer weight selection to prevent over-travel or premature bolt closure. This component pairs effectively with standard mil-spec receivers and is best deployed by users familiar with spring rate fundamentals and buffer system tuning.