This Silicon Carbide replacement spring is to be used with the Taran Tactical Sig Sauer MPX +11 base pads. The spring has 10% more power and was designed to ensure proper feeding and help to make sure the bolt is locked back when the magazine is empty. We recommend changing your springs in between shooting seasons, this will help the reliability of your magazines.
Taran Tactical Extended Length MPX Spring for 30 round Magazine
2908 Betz Court, Orefield, PA 18069
Fax: (610) 366-9680