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The Sig Armorer Superstrut for Sig Sauer P220 P225A1 P226 P227 P228 P229 M11A1 Spring Tuning Kit -8 pcs.



Please accept our apologies, per our agreement with the manufacturer of this product, we are not able to accept any discount coupons for this already discounted kit. If a discount code will be used during checkout, the order will be cancelled and will need to be re-submitted. Thank you.


For a limited introductory time, you will receive this excellent value "combination package" of the SA Superstrut and Armory Craft Ultimate Master Spring Tuning Kit - which will include a low friction, polished hammer strut and EIGHT tuning springs:

  • FOUR different hammer springs (16, 17, 18, 19 lbs)
  • 2 different sear springs
  • Firing Pin Spring
  • Firing Pin Safety Spring


If you currently have the short strut and long Mainspring Seat found in older SIG pistol made before 2011 or some MK25s, you will need the new style (SHORTER) Mainspring Seat. It is shown in the last picture of the image gallery above and you can order it here from the drop-down menu. If your current Mainspring Seat already looks like this, it does not have to be ordered.


Revolutionary and INDUSTRY FIRST - The Sig Armorer Superstrut Mainspring System developed by Robert Burke, certified SIG armorer and personal armorer to #1 ranked Team SIG shooter Max Michel.


  • Made from hard 4140 Steel
  • EDM Wire Cut
  • Precision Hand Polished
  • Durable Antifriction Coating


The SuperStrut Mainspring System fixes:

  • SAO Safety Crossbolt Impact
  • Mainspring Offset (no more bent mainsprings!)
  • Mainspring Fatigue
  • Mainspring Gouging

Will fit the following DA/SA as well as SAO models:

  • P220
  • P225A
  • P226
  • P227
  • P228
  • P229
  • M11A1


For a limited introductory time, we will also include the Armory Craft 8-Piece Ultimate Master Spring Tuning Kit, which is unquestionably the best value tuning kit on the market. A  $17.95 VALUE that can be purchased separately HERE includes the following EIGHT springs:

  • 19 lbs. Hammer Spring (blue)
  • 18 lbs. Hammer Spring (green)
  • 17 lbs. Hammer Spring (red)
  • 16 lbs. Hammer Spring (yellow - gunsmith installation & tuning only)
  • Sear Spring 
  • Competition Sear Spring (purple - gunsmith installation & tuning only)
  • Firing Pin Spring
  • Firing Pin Safety Spring


All triggers, hammers, springs or any other ignition gun parts are intended for installation only by a gunsmith or a qualified armorer.

The Sig Armorer Superstrut P220 225A1 226 227 228 229 Spring Tuning Kit -8 pcs.


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