Wolff Magazine Spring for S&W 59, 459, 559, 659, 915, 5903, 5904, 5906, 5923, 5924, 5926, 5943, 5944, 5967 10% Extra Power

Wolff Extra Power Magazine Springs are used when magazine reliability is critical or when original factory springs have lost their tension. These extra power springs put more pressure on the follower, presenting the cartridge to the slide with more force.