For mags, check Ben Stoeger.   There are a couple more shops, but can't think of the names at the moment.

I'll check later. So far my google search, gunmag warehouse has them in stock. But I won't support them because they think AR mags are illegal here.  Even though Andrew from HIFICO has sent them what our law states, sent them the bill where they tried to ban rifle mags (why ban something that is already illegal), multiple times.  Others have done the same, yet they refuse to budge.

Rumor is they got a letter from our AG, you know the AG office who's been "losing" all the 2a cases.

I ordered a few extra mags for my P365 from Ebay
Brownells also had in stock at the time but Ebay was cheaper. Ebay was genuine sig mags

This was the first thing I checked.  IDK which side is forward, but when I switched it, it had the same issue.  Also everything is clean, no gunk.

I called SIG and they are currently out of 10rd XL/X mags. These are mainly marketed to anti 2a states and they didn't make enough to keep up with the demand.  So they will email me once they're available so I can fill out the form and they replace them.

Need this to be running b4 Thanksgiving as we are going to Vegas and Mrs.CMO want's to carry this.  Worst case, we can always buy  standard cap mags up there. The first 4-5 rounds feed fine.  That's better than nothing.

David and DCT has some blocked XL mags, I'll try hit him up.  We needed more anyways.

I'd try swapping springs, base, follower to good mag body one at a time to see which has the issue.
Of course then all good mag innards to bad mag body

I ordered a few extra mags for my P365 from Ebay
Brownells also had in stock at the time but Ebay was cheaper. Ebay was genuine sig mags

don't you mean "genuine"?

don't you mean "genuine"?

"mec-gar guts!"

https://www.sigsauer.com/p365x-3-1in-romeozero-elite-slide-assembly-black.html

Ordered this slide assembly
365x slide, suppressor height sights, romeo elite optic
I'll sell the optic and replace with Holosun 507k green
It will be the OG 365 with the X slide and optic with suppressor night sights
Always have the option to go with the regular slide with regular night sights
Since I already have the camo ceracote 365 grip module, I'm going to stick with that.....for now..... 

"mec-gar guts!"

I don't mind Mecgar
I have several of their 1911 mags. Works great 

Nice!
Nice optic too 

Mahalo🤙🏽

https://www.sigsauer.com/p365x-3-1in-romeozero-elite-slide-assembly-black.html

Ordered this slide assembly
365x slide, suppressor height sights, romeo elite optic
I'll sell the optic and replace with Holosun 507k green
It will be the OG 365 with the X slide and optic with suppressor night sights
Always have the option to go with the regular slide with regular night sights
Since I already have the camo ceracote 365 grip module, I'm going to stick with that.....for now..... 

Wow sweet. Must be new version, mine doesn’t keep the rear sight.

https://www.sigsauer.com/p365x-3-1in-romeozero-elite-slide-assembly-black.html

Ordered this slide assembly
365x slide, suppressor height sights, romeo elite optic
I'll sell the optic and replace with Holosun 507k green
It will be the OG 365 with the X slide and optic with suppressor night sights
Always have the option to go with the regular slide with regular night sights
Since I already have the camo ceracote 365 grip module, I'm going to stick with that.....for now..... 

The 507k has a rear sight built in.

Sent from my SM-G991U using Tapatalk

Further testing.

Mags unloading by hand and the follower jams.

Mag in gun and racking slide 10x and all rounds feed into chamber and eject with no jamming.

Still havent shot her yet.

Sent from my SM-G991U using Tapatalk

The 507k has a rear sight built in.

Sent from my SM-G991U using Tapatalk

I wanted to try with the suppressor height sights, see how the co-witness looks vs with the regular sights

With the small window of the EPS carry, I found the iron sight height is more noticeable.  It 'can" take up more of the window.  For the 43x, the OEM sights were usable, but maybe 1/16" of the sight above the top of the optic body.  The Dawson sights are slightly taller than the Glock OEM.  If time permitting, I typically shoot with the dot centered in the window, like when zeroing.  Beyond that, I typically have the dot lower in the window.  With the Dawson sights, I found myself having dot pretty close to or on the front sight.  Giving the dot more room in the window in the "recoil cycle". 

I wanted to try with the suppressor height sights, see how the co-witness looks vs with the regular sights

If talking about pistols, it's not recommended that the iron sights be "absolute co-witnessed" with an RDS.  The less cluttered your viewfinder, the easier it is to locate and aim the dot.

Jedlinski’s opinion is slightly different. “I don’t really have a preference for dot placement,” he says.
 “Placing the dot behind the rear sight is a hardware solution to a software problem.” When it comes
to zeroing your dot and the relationship between the red dot and your regular sights, both men agree:
let the red dot be a red dot, and let your iron sights be iron sights.

“Suppressor height sights, especially the Ameriglo versions, are fine with a red-dot pistol,” says
Fisher. “But they should not have an absolute co-witness with your red dot. You’re negating a good
portion of the benefits of having a red dot if you try to make a red dot line up exactly with your irons. ”

Jedlinski agrees: “I recommend having iron sights of some kind on any pistol with a red dot. Red dots
can fail. Batteries can run out. But there are no electronics involved in a front and rear sight.” He also r
ecommends a minimalist approach to your sights, saying, “You don’t want to clutter up your field of view
with a lot of useless information. Keep your iron sights minimal, with blacked-out front and rear sights so
they don’t distract your eyes from the dot.”

https://www.ammoman.com/blog/getting-started-with-red-pistol-dot-sights/

Absolute co-witnessing works best on rifles with flip-up sights, so you can keep the viewfinder clear until you want/need the iron sights.

If talking about pistols, it's not recommended that the iron sights be "absolute co-witnessed" with an RDS.  The less cluttered your viewfinder, the easier it is to locate and aim the dot.
https://www.ammoman.com/blog/getting-started-with-red-pistol-dot-sights/

Absolute co-witnessing works best on rifles with flip-up sights, so you can keep the viewfinder clear until you want/need the iron sights.

CHWPS post on their IG various RDS with and without supressor height sights to show the clutter.

this is the same setup that I intend to run.  its pretty close to absolute co witness, but I don't think its too much clutter.  go to 28:15 to see the sights and red dot

this is the same setup that I intend to run.  its pretty close to absolute co witness, but I don't think its too much clutter.  go to 28:15 to see the sights and red dot

They got everything but the espresso maker on it.

this is the same setup that I intend to run.  its pretty close to absolute co witness, but I don't think its too much clutter.  go to 28:15 to see the sights and red dot

The dot is co-witnessing pretty low in the viewfinder, making me think the height of his iron sights and the height of the RDS mount are causing a 1/3 co-witness (vs absolute), which is how I prefer my rifle red dots.  That keeps the iron sights out of the center when using the red dot, but allows for iron sight use and/or verifying the red dot is zeroed as needed.

They got everything but the espresso maker on it.

let me be more specific.  I won't have the pocket clip and the laser, just the red dot and sights will be the same
yeah, that is like a mall ninja setup he has.   

The dot is co-witnessing pretty low in the viewfinder, making me think the height of his iron sights and the height of the RDS mount are causing a 1/3 co-witness (vs absolute), which is how I prefer my rifle red dots.  That keeps the iron sights out of the center when using the red dot, but allows for iron sight use and/or verifying the red dot is zeroed as needed.

i like the 1/3 co witness too