Benelli M4 Wolff Magazine Spring

Wolff Benelli M4 High-Power Magazine Spring – 7-Round Magazine Tubes The Wolff Benelli M4 Magazine Spring is a high-power, precision-manufactured upgrade designed specifically for Benelli M4 shotguns equipped with 7-round magazine tubes. Custom engineered to our specifications, this spring improves feeding reliability while also providing slightly more usable space inside the magazine tube compared to the factory OEM spring. Unlike the OEM Benelli M4 spring—which performs adequately when new but tends to take a set quickly and lose power—the Wolff spring is intentionally slightly overpowered when new, settling into optimal tension after break-in. This design ensures consistent shell presentation to the loading gate and reduces the risk of failures to feed, especially with lighter loads and 3″ shells. Key Benefits Designed for 7-round Benelli M4 magazine tubes Improved reliability over factory OEM springs Slightly shorter solid length for more internal magazine space Helps with fitting