Brownells S&W M&P Extra-Power Magazine Spring is an extra-length spring replacement designed to work with aftermarket magazine extenders and extended base pads. It increases spring power to help maintain smooth, reliable cartridge feeding when magazine capacity is increased beyond factory configurations.
Key Features
Up to 10% more follower spring power for smoother, more reliable feeding
Extra-length design for use with aftermarket magazine extenders and extended base pads
Built from certified aerospace-spec chrome silicon wire
Heat-treated and stress-relieved to ISO 9000 standards for consistent spring performance
If you are running an M&P with extended capacity parts, this extra-power spring helps keep feeding dependable—replace your factory spring for more consistent operation.
