SIG P-Series Custom Strut System – P226, P229
$75.00
The Grayguns Custom Strut System fully supports the main spring, reducing friction, spring bowing, and fatigue. The design eliminates the double-action “crunch” felt in OEM pistols. This complete 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, including the P226, P229, P228 and similar variants. Review our Fit Guide below.
Description
Bruce Gray designed our custom P-Series Fat Custom Strut System 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.
The custom strut system 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.
A durable seat that is machined in-house is paired with the upgraded strut. It is made of aircraft-grade aluminum and anodized. These struts are indestructible and guaranteed for life.
This complete system also includes our custom P-Series Master Spring Set to help reduce your pull weight for full tuning options. The kit contains a 17-pound spring (red) and a 19-pound spring (blue).
P-Series Custom Strut System Fit Guide
The system is compatible with the E2 style grips and most older style grips. The design fits most of the following SIG DA/SA pistol variants:
- P226
- P228
- P229
- P225-A
- P227
Our strut system does not fit the SIG P229c (P229 Carry) or P229c SAS.
Companion Products
- Looking for reduced DA & SA pull weights and a better feel? Add the Enhanced Leverage System.
- How about experiencing the shortest reset possible? Add the Short Reset Trigger Kit.
Additional information
| Weight | .125 lbs |
|---|---|
| Package Dimensions | 6 × 4 × 1 in |
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Disclaimer
Many parts sold by Grayguns - including but not limited to triggers, trigger kits, internal components and spring kits - are intended for installation by a qualified armorer or gunsmith who is familiar with the firearm.
Although kits fit with no issues in a great majority of pistols, Grayguns cannot guarantee perfect functionality in every instance.
Due to varying tolerances present in all mass-produced firearms, professional fitting by a qualified armorer who is familiar with the pistol's action may be required.
Grayguns offers installation services for all parts kits we offer. If you have any issues or questions about the installation process, STOP IMMEDIATELY and contact the Grayguns Customer Service Team.
mightyjoe_gym (verified owner) –
I purchased the short reset sear and enhanced trigger system for my pre-99 P228. I realized too late that I had not done my research well enough as my older model has the longer strut main spring. Of course the Gray’s springs are the shorter updated version. A little research made purchasing the fat strut main spring assembly a no brainer. Only downside was waiting an additional 3 days to receive the fat strut (prompt order fulfillment and shipping right there!). Very happy with the end results and hope my review helps others whose mouse trigger fingers are faster than their brains!
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Leslie Oglesby (verified owner) –
SIG Strut is outstanding, I fitted it along with the SIG SRT and ELS for P226. These three items go together they transformed my P226. What a difference they make to an already great pistol, the fit, and finish is second to none!
I highly recommend. these items.
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jbwjbw (verified owner) –
I used to do a lot of my own polishing and stoning – this is as close as I have found off the shelf. Combined with the leverage kit, I saved a lot of hours.
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ron.jackson (verified owner) –
I purchased the Custom Strut System, Short Reset Trigger kit and the Sig Advanced Leverage System. All were easy to install, and the difference between the before and after are night and day – I could not be happier!. Awesome stuff!
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crabbys44 (verified owner) –
My 198oesque P-226 had a godawful double action pull. It was like squeezing a rock until it broke. It was much heavier than 12#, it was heavier than any stock revolver I ever shot.
Now, it’s light, smooth, and consistent. I don’t have a trigger gauge but it feels like 6# or so. It feels so light I’m almost concerned about light strikes but a few long range session are in order with some hard primered russian ammo are coming up.
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Brad Whiting (verified owner) –
I added the strut and the Enhanced Leverage System. The gun feels so much better. Highly recommend.
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Tino (verified owner) –
In combination with the enhanced trigger bar and trigger upgrade it is an amazing improvement. One thing to remember is to use the supplied seat! I used a the aluminum aftermarket seat already installed and the strut was locking in trigger. Thought I had defective strut until I realized that seat is machined specifically for fat strut.
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travis.gray71 (verified owner) –
Grayguns parts are my go to for Sig upgrades. Custom strut is a great upgrade that smoothes out the action.
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Randy diller (verified owner) –
Great kit and worked great, used in old german 226 and made very big improvment… highly recomend
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jgreene558 (verified owner) –
Fantastic product. Strut kit super easy to install. Only took about 10 minutes to install. installed with 19-pound spring in P 229 legion EDC weapon. This strut and spring removed the crunch felt in the DA mode and lightened up the trigger pull in both DA/SA modes. I am now planning to order and install the Enhanced Leverage system to reduce the trigger pull more.
Ordered the strut kit and received it in 5 days and I live on the east coast. Super great customer service by Grayguns. Thanks!!!
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Thomas Nadeau (verified owner) –
My p229 was 20 years old and I was replacing all the springs. When I got to the main spring I decided to try the gray guns kit.
The installation was very easy and it makes the DA/SA smooth and easy.
The only problem I had was with the grip panels. The new assembly was too wide for the older grips.
I called and spoke to a gunsmith who told me that this sometimes happens with the older sigs and that if I SLOWLY shave off some of the inside grip plastic they will fit. A few passes with a razor on the inside plastic of the grips did the trick. I didn’t have to remove all that much.
Very pleased with this product.
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mgailliout (verified owner) –
Installed on my MK25 which from the outside looked bone stock except for the black aluminum grips. This along with the SRT and captured rod makes my gun a complete legion killer sleeper. Bought it over Labor Day for the discount and free shipping. Received it Friday and installed to shoot on Saturday. It feels awesome SA and DA are a joy and accurate. Don’t get frustrated when you instal the strut it just takes some English and it will go. Thanks Grayguns!
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jcoat007 (verified owner) –
I upgraded a p229 with the Grayguns Custom Strut, ELS, SRT kit, Fat guide rod and dual-adjustable straight trigger. It made a night and day difference. It transformed a nice gun into a stellar gun!
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bpshootr (verified owner) –
Anyone wanting to upgrade their Sig P229 i can attest that this is an exceptional product. Very easy installation and has made a huge difference in the way the gun performs. Keep up the good work.
Jeff Whitman
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Curtis Greenlee (verified owner) –
From the initial parts order to the range the entire process was smooth as silk. I’ll be back to order more parts shortly and thank you for being the professionals you are!
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J Scott Peterson (verified owner) –
Overall it feels a lot smoother and consistent on the DA. Used the red Spring but during install the red dye rubbed onto my fingers. It looked like I had been eating pistachios that were dyed. Wear some gloves. Feels great SA but not too light. Really liked the Aluminum Spring seat that replaced the plastic one. Ready for the range.
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nserafini (verified owner) –
Easy to install. I combined this in a stock P226 with an SRT and the GG ELS Trigger kit and my 226 is like a new gun. Admittedly it’s a bit pricy but it’s a quality setup. I hate fudd’s who say “Buy once, cry once” but it’s worth the $$$.
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jclaybackus79 (verified owner) –
I have loved my P226 SAO Legion since I first pulled the trigger. I wound up picking up a P229, and after deliberation, decided I wanted DA/SA and no ceracote for regular carry. I went with a 229 Equinox. (Side Note: I didn’t care for the looks of the Equinox slide up on purchase, so it got a black Pro Cut slide and a Bar-Sto SS fluted barrel – very nice looking pistol now.) I won’t lie though, I just couldn’t shoot the pistol like the 226 SAO or my other striker fired pistols – and I’m not only talking about the DA trigger pull, even my SA shooting was below my personal threshold of acceptability for a carry pistol. Very frustrating considering my love and luck shooting the P226 SAO, and considering my investment to date in the P229…..
So, in comes Gray Guns. The ELS (flat trigger), plus fat strut, has transformed my ability to shoot this pistol significantly. My DA accuracy is now on par with what my SA accuracy was – not great, but quite respectable. And, my SA accuracy is on par with my p226 SAO shooting.
The DA trigger pull is long, but smooth. I have long fingers, so no problem here, though others may feel differently. The SA trigger pull is exquisite for a DA/SA pistol in my opinion. Honestly, I am thinking that it is the flat trigger which has impacted my SA experience more than anything; pre- and over travel are dialed in near-perfectly and all of my other pistols have flat or near flat triggers, so getting away from the significant radius of the stock trigger must add up to what I needed. Once I have put another few hundred rounds down range without any hiccups, my P229 will definitely go into carry status, right where it was always meant to be.
And, then there is Gray Guns! Wow, good folks, pleasant to deal with, quick shipping and good install videos. I am pleased to give them my business.
So why 4 stars? It’s a bit pricey for what you get – the margin must be huge! But, R&D has costs. And, quality has costs. And, exclusivity has costs. And, I will spend the money again if I find myself in a similar situation. So, there’s my 2 cents on that.
I will say to anyone with an Equinox, be advise that this nickel finish is a high gloss nickel finish – it does not match the nickel finish of the Equinox line. Nor does it clash – I was worried I would not like the looks of it. So, I said to myself, good thing (my) pistols aren’t about looks! Then, I installed it and found that it looks great – no problems at all with my opinion of the looks – I love it. Having the stainless Bar-Sto barrel peaking through the Pro Cut slide, the gloss nickel trigger and the flat nickel controls works quite well in my eyes, and those of everyone who has seen it.
Thanks Bruce and Team
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gamarrett (verified owner) –
I purchased a P229 9mm Legion RXP. I am a man of 72 years with four surgeries on my right arm and loss of half my bicep muscle. I felt that this upgrade was essential for me on my new purchase. Gray Guns delivered with the Fat Strut with the 17 pound spring. I wanted to stay with Gray Guns up grades because Sig Sauer trusts them enough to have put the SRT trigger system in the Legion line of guns. First time to the range fired over 300 rounds could have shot more. Thank you great up grade smooth trigger pull.
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tgtkemp (verified owner) –
I put this Grayguns SIG P-Series Fat Custom Strut System in my P229 Equinox and the trigger is NOW amazing. I have other Sig pistols, that I thought had great feeling triggers, this one takes the crown. Thanks for making available such an easy upgrade !!!
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reganedalgo (verified owner) –
So stoked when I was able to purchase and install this in my MK25. Trigger feels 1000x better, extremely smooth pulls and drastically reduced DA/SA pulls. Easy install process, quick shipping and amazing customer service is always a plus!
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pr.thomas (verified owner) –
I just installed the kit on my M11A1, and it really makes a difference in the DA Trigger pull. It’s a lighter pull and much, much smoother.
It went from the Factory 12lb. to 9lb. (It actually feels lighter than that, but it’s what my gauge breaks at.) I wasn’t sure about the included sear spring, so I contacted customer service by email and Chris promptly replied and informed me that it is a lighter spring than the factory spring. I installed the sear spring along with the 17lb hammer spring.
I’m not a gunsmith by any means but after watching a couple of videos I found online, it is a very easy process. I think my next purchase will be the ELS Trigger system with a flat, adjustable trigger.
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quennel.lawson (verified owner) –
Works as a performance upgrade should. Love the reduced lbs compared to what it was especially in sa.
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Jaysen Smith (verified owner) –
Super smooth part , form , perfect fit and reduced my trigger pull nicely.
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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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