Arredondo 170mm 12 Coil Magazine Spring

One of the best possible springs that you can use in STI / SV 170mm magazines. Custom made by Wolff for Arredondo Design. These springs are longer and stronger than the original springs with which magazines are delivered.

These springs were specially developed for the +3 base pads. They are perfect for the Arrendondo feeder, but are easily adaptable to most other feeder systems.