From Grayguns, a Master Spring Set for Sig Sauer P-Series handguns. The P-MSS kit is an action upgrade package designed to reduce trigger pull weight while still providing reliable primer strikes. This set includes two mainsprings, one 17 lb. and one 19 lb., and a competition sear spring.

Fits the modern P-Series handguns with a DA/SA system, P220, P224, P225A1, P226, P227, P228, P229 and P-226 X-Five Allround.

Bruce Gray combined the best of both worlds when he designed what we know as the hybrid trigger.

The unique face allows the shooter can take advantage of finger placement lower on the face, with the comfort of a traditional curved face. This hybrid design reduces trigger weight while preserving all mechanical safety values.

The Grayguns P320 Hybrid Trigger uses internal leverage changes to yield superior trigger pull, while supporting the voluntary upgrade’s enhanced reliability and rough handling performance qualities.

Includes our adjustable over-travel stop design to shorten reset and take out all gross over-travel. Designed for easy drop-in installation.

Specifically designed for P320s with current fire control unit components, or those who have gone through SIG’s Voluntary Upgrade Program.

Specifications and Features

• Specifically designed for P320s with current fire control unit components, or those who have gone through SIG’s Voluntary Upgrade Program
• Adjustable over-travel to help reduce reset and take out wasted motion
• Reduces total trigger pull weight approximately 2 pounds below factory-stock for the standard series, and about 1.25 pounds for the X-Five variant
• Designed for use with the SIG factory trigger bar spring
• Minimal over-travel, stops at optimum trigger face angle
• Smoother takeup and release sensation
• Preserves factory sear engagement and mechanical safety values
• Proven reliable and durable for high-volume professional use
• Limited lifetime warranty on materials and workmanship

Fit Guide

Fits all variations within the P320 (upgraded) system. Including all sizes, TACOPS Carry, X-VTAC, X-Carry, X-Five and RX versions.

Disclaimer

These parts are intended for installation by a qualified armourer or gunsmith. In some cases professional fitting will be required by a trained, qualified armorer/gunsmith who is very familiar with the pistol’s action. This is due to the varying tolerances present in all mass-produced firearms. Although kits fit with no issues in a great majority of pistols, Grayguns is unable to guarantee perfect functionality in every instance. Grayguns does offer installation services for all parts kits we offer.

The SIG P-Series Dual Adjustable Straight Trigger is the straight-faced version of our legendary curved P-Series Dual Adjustable Trigger. This trigger includes over travel and pre-travel adjustability. (Adjustable for double action slack and single action over travel.)

The optimized trigger face pressure-wall angle provides for outstanding single action sear release and positive, ultra-fast reset control. The ergonomics provides superior double action leverage and control.

Dual Adjustable Straight Trigger Details

This trigger is machined from tough steel. The trigger is carefully heat treated and finished in black oxide. Tight pin hole tolerances assure smooth, solid function. Guaranteed for life against defects in materials or workmanship.

Made with love, supplied with a hex key.

The trigger weight is about .83 ounces (23.45 grams)

Fit Guide

The trigger is designed to fit both current and older model traditional double action (DA/SA/decocker) P-Series pistols, including

• X5 All-Round
• P220 (see exceptions below)
• P226
• P228
• P229
• P227 and others

These triggers are approximately 10mm wide. At this time, we are not suggesting this trigger for guns equipped with the DAK trigger system.

This trigger may not be fully compatible with California compliant or similar P-series pistol models equipped with a magazine disconnector, and Grayguns urges caution. We do not recommend deactivating any mechanical safety device.

The Grayguns DA/SA triggers will not fit SIG Pro, P225 / P6, P239, West German P220s, or most SAO models. Most of these triggers are a narrower 8mm width

Intended to be installed by a qualified Sig Sauer armorer or gunsmith

Developed by the renowned gunsmiths of Grayguns, the FAT guide rods are designed to optimally support factory Sig Sauer, and Grayguns custom multi-strand springs for maximum service life and smooth, reliable function. Designed to the maximum nominal diameter to fit each pistol perfectly, FAT rods also eliminate the possibility of coil-jumping and damage when used with correctly-selected after-market single strand recoil springs. Grayguns FAT rods are hardened and stress-relieved to withstand a lifetime of hard use as well as being carefully polished stainless or finished in ultra-durable Super Black. Lifetime guarantee against galling, ringing or breakage. Simply put, some of the highest quality guide rods available today.

Fits Sig Sauer P228 and P229 - Super Black Finish

The Grayguns proprietary enhanced leverage geometry reduces pull weight approximately 25 percent without compromising reliability or factory safety values. The trigger is dual-adjustable for pre and over-travel, which is what you’d expect from the Industry Leader, GGI.

Each Grayguns enhanced-geometry trigger bar is micro polished for superior smoothness and perfectly timed function. This is the Hybrid trigger shoe.

The trigger kit is engineered to provide several key benefits:

• Reduces the pull weight of double and single action without the need for spring replacements.
• Reduced over-travel
• Reduced pre-travel
• Maintains all factory safety functions.

The kit is 100 percent American made from precision machined heat treated tool steel.

100% American made from precision machined heat treated tool steel, then hand finished and treated with tungsten DLC for unlimited service life.

This kit is compatible with P226/229/228 pistols that have the larger DAK-capable frame window cut.

This can only be purchased as a complete system and REQUIRES the trigger AND the trigger bar in order to function.

Developed by the renowned gunsmiths of Grayguns, the FAT guide rods are designed to optimally support factory Sig Sauer, and Grayguns custom multi-strand springs for maximum service life and smooth, reliable function. Designed to the maximum nominal diameter to fit each pistol perfectly, FAT rods also eliminate the possibility of coil-jumping and damage when used with correctly-selected after-market single strand recoil springs. Grayguns FAT rods are hardened and stress-relieved to withstand a lifetime of hard use as well as being carefully polished stainless or finished in ultra-durable Super Black. Lifetime guarantee against galling, ringing or breakage. Simply put, some of the highest quality guide rods available today.

Fits Sig Sauer P228 and P229 - Stainless

The Grayguns P-Series Dual Adjustable Curved Trigger is the ultimate trigger upgrade for your Legion Series or any modern DA/SA SIG P-Series pistol.

Bruce Gray has combined the adjustable over-travel feature, unbeatable comfort and control and unrivaled quality of our original OEM SIG Sauer® Legion P22xCT, Classic Standard trigger, with the improved geometry and pre-travel adjustment of our wildly popular P22xST Dual Adjustable Straight Trigger series.

This trigger is the ultimate upgrade for your Legion Series or any modern DA/SA SIG P-Series pistol.

Our Dual Adjustable Curved Trigger

This steel trigger is carefully heat treated and finished in black oxide. Tight pin hole tolerances assure smooth, solid function. The trigger is guaranteed for life against defects in materials or workmanship.

Made with love, supplied with a hex key.

Fit Guide

The Dual Adjustable Curved Trigger is designed to fit both current and older model traditional double action (DA/SA/decocker) P-Series pistols, including:

• X5 All-Round
• P220 (see exception below)
• P226
• P228
• P229
• P227, and others.

These triggers are approximately 10mm wide. At this time, we are not suggesting this trigger for guns equipped with the DAK trigger system.

This trigger may not be fully compatible with California compliant or similar P-Series pistol models equipped with a magazine disconnector, and Grayguns urges caution. We do not recommend deactivating any mechanical safety device.

The Grayguns DA/SA triggers will not fit SIG Pro, P225 / P6, P239, West German P220s, or most SAO models. Most of these triggers are a narrower 8mm width.

Bruce Gray combined the best of both worlds when he designed what we know as the hybrid trigger.

The unique face allows the shooter can take advantage of finger placement lower on the face, with the comfort of a traditional curved face. This hybrid design reduces trigger weight while preserving all mechanical safety values.

The Grayguns P320 Hybrid Trigger uses internal leverage changes to yield superior trigger pull, while supporting the voluntary upgrade’s enhanced reliability and rough handling performance qualities.

Includes our adjustable over-travel stop design to shorten reset and take out all gross over-travel. Designed for easy drop-in installation.

Specifically designed for P320s with current fire control unit components, or those who have gone through SIG’s Voluntary Upgrade Program. Designed for demanding duty use, with the toughness to outlast your pistol, our P320 triggers are guaranteed for life.

• Hybrid face design
• Preserves factory sear engagement and all mechanical safety values
• Adjustable over-travel eliminates gross movement after the sear is released and reduces trigger travel to reset
• Enhanced Leverage geometry reduces pull weight by 30% with stock springs
• Smoother takeup, sear release and reset sensation
• Optimal 90⁰ sear release
• Supports Voluntary Upgrade rough handling characteristics for assurance and reliability
• Designed for use with the SIG factory trigger bar spring
• Proven reliable and durable for high-volume professional use
• Limited lifetime warranty on materials and workmanship

Titanium Nitride (TiN)

A well-proven standard layer type through its balanced properties. The golden titanium nitride layer, abbreviated TiN, indicates the following properties:

• High hardness and adhesion
• Good chemical resistance
• Good temperature resistance in air
• Relatively low thermal conductivity
• Attractive, golden color

Fits all variations within the P320 (upgraded) system. Including all sizes, TACOPS Carry, X-VTAC, X-Carry, X-Five and RX versions.

Disclaimer

These parts are intended for installation by a qualified armourer or gunsmith. In some cases professional fitting will be required by a trained, qualified armorer/gunsmith who is very familiar with the pistol’s action. This is due to the varying tolerances present in all mass-produced firearms. Although kits fit with no issues in a great majority of pistols, Grayguns is unable to guarantee perfect functionality in every instance. Grayguns does offer installation services for all parts kits we offer.