SIG P-Series Fat Custom Strut System
$69.00
The Grayguns custom-designed Strut System fully supports the main spring, reducing friction, spring bowing and fatigue. The design eliminates the typical double action “crunch” felt in OEM pistols. This full system also includes our custom P-Series Master Spring Set, to help reduce your pull weight for full tuning options.
Designed for many SIG Sauer® P-Series Traditional DA/SA pistols. Review our Fit Guide below.
Description
The SIG P-Series Fat Custom Strut System was designed by Bruce Gray to help bring another Grayguns custom gunsmithing service to the drop in parts market.
For more than 40 years Bruce has been modifying factory struts to eliminate the typical double action crunch caused by the sharp edges and tip of the strut.
In his new design, the fat strut fully supports the main spring which reduces friction, spring bowing, and fatigue. The struts are cut using a precision EDM process, hand finished, and heat treated to the proper hardness.
Paired with the upgraded strut, is a durable seat machined in-house out of aircraft grade aluminum and anodized. These struts are indestructible and guaranteed for life.
This full system also includes our custom P-Series Master Spring Set, to help reduce your pull weight for full tuning options. Includes 17 pound spring (red) and 19 pound spring (blue).
Fit Guide
The system is compatible with the E2 style grips, as well as most older style grips. The system fits most of the following SIG DA/SA pistol variants:
- P226
- P228
- P229
- P225-A
- P227
Disclaimer
These parts are intended for installation by a qualified armorer 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.
Additional information
| Weight | .125 lbs |
|---|---|
| Dimensions | 6 × 4 × 1 in |
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bakerdavel (verified owner) –
Double-action practice once bordered on futility. The force needed to pull the trigger varied through the stroke; I was never sure when a slight “catch” meant the hammer was about to release or further pull was needed. I found myself flinching because of this uncertainty, making the first shot a poor one. This strut, combined with installation of the included 17-pound spring, cured this ill. My trigger pull smoothed like rubbing two sheets of silk together rather than ripping Velcro. I now can tell when my Legion is about to go boom. That double action shot accuracy is now nearly as good as the single action one. The entire pull stroke is smooth and consistent throughout. (I did grease it with TW25B; the strut has a nonstick coating.) You’ll need to go online and watch YouTube videos to figure out how to install it. Installation instructions are not included. Pretty easy once you figure it out. I’m still not sure about the role of the included sear spring – does it increase performance or is it just a spare and the same as factory? I wound up not installing it. No issues with light strikes with factory loads after the 17-pound spring was installed. Swapped out struts in a 9mm Legion and a .40-caliber P226. Both performed wonderfully.
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Derek Enslen (verified owner) –
Paired with the GG SRT kit and ELS trigger system the fat strut gives my Sig P226 Elite smooth as butter and fantastic! I’d recommend it for any Sig P226 or similar!!!
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jefferybriles (verified owner) –
I purchased this for a P229 Elite that I own and am giving a facelift to. The strut is part of a series of additions, including a short reset trigger, optic, and ergo grip. The Fat Custom Strut System really improves that double action pull, helping to make that first shot stay in the 10 ring. I intend to set this pistol up as an appendix everyday carry once I put a thousand rounds through it and find a holster to fit the optic. If you intend to improve on an already great pistol, this Grayguns kit would be money well spent!
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dmchapman30 (verified owner) –
I installed this Grayguns P-Series hammer strut kit with the 19 lbs. spring in a late 90s German frame P229 (.40 cal.) and 2008 German frame P226R( .40 cal. converted to .357 Sig). For both pistols, each demonstrated reduced trigger pull for both single and double action. P226R Dbl. 10+ to 9 lbs/ Sing. 4 to 3.75 lbs.; P229 result Dbl. 9 lbs/ Sing. 4.5 lbs.) The promise of improvement is proven with each stroke of the trigger! This will compliment the Grayguns trigger & trigger bar I plan to order in the near future for both. Thank you for making great parts for these tried and true fighters!
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andre.serbin (verified owner) –
swapped my strut on p229 legion and its amazing how well trigger pull feels! Smooth almost like it has roller bearings
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Chris Roush (verified owner) –
Does exactly what it says that it will do. I like it and it will help my DA shot placement for sure.
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win9639445 (verified owner) –
I installed this kit on my 225A with the blue mainspring. Smoothed out the DA pull so much. Also it installed rather easily. A definite must have for compatible P series guns.
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George Carpenter (verified owner) –
P226R 40S&W, accurate with the usual crunch/stacky SIG DA trigger.
Previous SIGs were reworked with Wolff springs and some Armorer Love™, to some success.
Nothing compared to the Grayguns Fat Custom Strut with the Master Spring Set.
The 19-pound Blue spring was originally installed with 100% duty reliability in mind.
Marked improvement when compared to the factory original. Range test @ 36ºF in rain. 100% reliable.
The Red 17-pound spring was installed.
The firearm was then packed in snow to chill the firearm, magazines, lubricants, and cartridges.
I was skeptical. Outcome?
100% reliable with a mix of Federal HST3, Speer Gold Dot 165, and Winchester 180 gr Ball – despite the “weaker” spring, and below freezing operating conditions.
The Grayguns ELS with Hybrid Trigger was added, nearly negating the DA pull difference in combat scenarios.
Amazing.
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Kevin (verified owner) –
It’s thr usual Grayguns quality. Excellent finish work and a great design. All the little details have been cared for and the result is a clean DA stroke that’s free of the gritty, crunchy feeling. Once you try it, you’ll want one in every pistol.
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grammcgregor (verified owner) –
I put this in my late 90’s German Framed P229 when I was converting it from .40 S&W to 9mm – also put in the Gray Guns ELS Trigger – which I ordered from Sig – even though Gray Guns squared away my confusion and sent me the needed part FREE!
My P229 went from a tired clunky trigger to a sweet shooting pistol moving out of the safe and not only onto my hip but out to the range!
The strut makes the double action feel like it’s on roller bearings – absolutely sweet!
Way to go Gray Guns and Keith Hosey for helping me so much at all hours!!
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