I window shop on the Matrix Precision/Revenant Arms website at times. Especially after reading threads here about pistol builds using Matrix Precision/Revenant Arms frames.
Me personally, I don't see myself ever buying one of their frames, but strictly because they are made from anodized aluminum instead of stainless steel.
My pistols, my choice for frame material. I prefer stainless steel frame pistols vs aluminum.
The one & only aluminum framed SIG pistol that I had ever purchased was gifted to a good friend many years ago.

I had seen the longer style aluminum mainspring seats for several years, until a month or so ago. Poof, no longer listed on the Matrix Precision/Revenant Arms website.
I do not know if it was a case of just being out of stock, or no longer being manufactured anymore.
You would have to contact Matrix Precision and ask them.

I emailed Matrix Precision. They responded quickly and stated they had actually found nine of the longer style aluminum mainspring seats. They put them up for sale on their website and I bought all nine.
The longer style will fit a wide variety of SIG pistols. In my case, I will be adding them to an assortment of P226 and P220 pistols.
I also bought three of the short E2 style.
They also make them for the SIG P239 and P224.

Shipping was quick!

I haven't installed any of them yet. I do plan on taking some measurements for comparison between the factory SIG plastic mainspring seats and the Matrix/Revenant aluminum units.
I've never had a SIG OEM plastic mainspring seat fail and I will be changing them all out to anodized aluminum just because I can.
All the units I bought are anodized in black.

Long style: https://www.matrixprecisionpar...eries-standard-grip/
Short E2 style: https://www.matrixprecisionpar...r-sig-sauer-e2-grip/
For P224: https://www.matrixprecisionpar...t-installation-tool/
For P239: https://www.matrixprecisionpar...-with-hammer-spring/

I will report here after measuring and installing the Matrix/Revenant aluminum mainspring seats.

This message has been edited. Last edited by: cee_Kamp,

Earlier this afternoon I freed up some time and replaced all of my SIG OEM plastic mainspring seats with Matrix Precision/Revenant Arms black anodized aluminum mainspring seats.
Dimensionally, the Matrix Precision/Revenant Arms aftermarket anodized aluminum parts mirror the SIG OEM plastic mainspring seats VERY closely.
Fit/finish/machining accuracy/machining quality is very good. Visually when installed, it's real tough to differentiate between the black OEM plastic part, and the aftermarket black anodized aluminum part.
The mainspring seats removal/installation requires the grip panels to be removed, and the OEM plastic mainspring seats only require a screwdriver for removal.
The anodized aluminum mainspring seats can be installed using your fingers.

I've never had a SIG OEM plastic mainspring seat fail, but if a plastic mainspring seat failure occurs, the pistol will only useful as a club or hammer.
When I routinely clean my handguns, the final step before reassembly & lubrication is to hose everything down with Gun Scrubber/Brake Cleaner.
I use the CRC brand Brake Cleaner in the red can. It is chlorinated, and could damage/dry out plastic components.

Some of my SIG P series pistols were purchased starting in 2009, so at 15 years old, I was slightly concerned about mechanically stressed plastic components failing.
Old plastic can dry out and become brittle.

At ten dollars per part, it's very cheap insurance.

The Sig Armorer warns against using an aluminum seat. Here is his warning:

"Do NOT use Superstrut; or the factory E2 Strut for that matter, with an aluminum or any other metal mainspring seat. The seat is designed to be made from plastic as it works as a bearing against the strut. Metal seats WILL be gouged by the strut and over time will create enough friction to reduce mainspring force and make the double-action pull both gritty and heavy."

Whether true or not, I cannot say, just passing it along.

"Metal seats WILL be gouged by the strut and over time will create enough friction to reduce mainspring force and make the double-action pull both gritty and heavy."
The key wording in that warning is "over time."
The type of wear mentioned is easily identified, observed, and monitored.
Spare aluminum spring seats are cheap at $10.

If I draw one of my SIG pistols in a life/death situation, press the trigger for a double action pull, and the OEM plastic spring seat crumbles into plastic fragments, I'm screwed.
I will take my chances with the "over time" wear condition.
Thanks for providing that information, it is an interesting observation from someone that is without question, qualified to make that statement.

If the hammer strut can gouge an aluminum mainspring seat won't it also gouge a plastic one? Also, if the mainspring force is reduced by the gouging wouldn't the trigger pull become lighter or at least inconsistent, not heavier? I'm not saying the 'gouging' doesn't happen and I don't know of a replacement schedule for the seat but it is included in at least one of the factory parts kits so maybe it should just be replaced at some round interval like the takedown lever.

quote:

Originally posted by SigLaw:
The Sig Armorer warns against using an aluminum seat. Here is his warning:

"Do NOT use Superstrut; or the factory E2 Strut for that matter, with an aluminum or any other metal mainspring seat. The seat is designed to be made from plastic as it works as a bearing against the strut. Metal seats WILL be gouged by the strut and over time will create enough friction to reduce mainspring force and make the double-action pull both gritty and heavy."

Whether true or not, I cannot say, just passing it along.

Huh. I'd be curious how Bruce Gray would respond to this. His seat is made of aluminum. He also seems to steer away from gritty and heavy triggers.

Anyway, I have the short seats from Matrix in many of my Sigs. High quality. I can't say they improve anyhting but durability, and in that respect I've never noticed any wear.

quote:

Originally posted by cee_Kamp:
I window shop on the Matrix Precision/Revenant Arms website at times. Especially after reading threads here about pistol builds using Matrix Precision/Revenant Arms frames.
Me personally, I don't see myself ever buying one of their frames, but strictly because they are made from anodized aluminum instead of stainless steel.
My pistols, my choice for frame material. I prefer stainless steel frame pistols vs aluminum.
The one & only aluminum framed SIG pistol that I had ever purchased was gifted to a good friend many years ago.

Matrix is a great company. I, too, would like to see some stainless frames. Have you ask Matrix if they could ever tool up for steel?

For lighter, EDC builds, I can say that their aluminum frames are VERY nice, probably better than OEM Sig. I have 3, and I'll keep buying more. All of them seem built better than all of my OEM Sig frames, be they German, Exeter, aluminum, or stainless. One of them (railed/non-beaver/P2296/9mm) happens to be the best pistol I own--everything just went together perfectly on this one, trigger unbelievable in both SA and even DA, and the slide-to-frame fit turned out absolutely perfect, feels like glass.

quote:

One of them (railed/non-beaver/P2296/9mm) happens to be the best pistol I own--everything just went together perfectly on this one, trigger unbelievable in both SA and even DA, and the slide-to-frame fit turned out absolutely perfect, feels like glass.

What fire control components did you use in your build? Was it the Revenant Arms parts off the Matrix website? I ask because I am currently purchasing parts to put together a P226 build on one of their frames and and going back and forth about where to source my lower parts.

quote:

Originally posted by 92fstech:

What fire control components did you use in your build?

Slide was the complete "pro-cut" thing that Sig makes. To be certain, with the exception that it is machined quite well, I do not like it--don't like the holes, the optic cut, the serrations, or even the sights. It is tacticool B.S. But I stumbled on it at about 1/2 the cost of any other 229 slide on the market at the time, so it is what it is.

Other components, IIRC:
- Grayguns ELS
- Grayguns guide rod
- Sig SRT
- Sig 224/Legion levers. N.B.: I have the 224 decock on all 3 of my Matrix frames, and they all seem to have required a bit of break-in. No issues with standard P-series decocks. Not sure why.
- OEM 9mm 229 recoil spring
- Armorycraft skeleton hammer
- Matrix strut, seat, spring
- Matrix extended mag release
- Matrix block
- I think all other small parts were purchased via Matrix, but there may have been 1-2 that were OEM out of my spare parts bin
- Of course, P-SHIM!

I'll try to take some pics, post in the A.M.

Cool, thanks! I'd love to see pics of your build!

I just ordered the parts kit today, so at least I'll have something to put in the frame when it gets here. I have a good collection of parts already, but it was cheaper to just buy the complete kit than try and assemble everything I needed. I have a Sig SRT kit handy, and was considering a Grayguns ELS and Strut System eventually. I figure I'll start with the Matrix parts and upgrade as necessary. I have a complete upper and mag coming from member Cyberphobia that I bought through the classifieds, too.