https://magpul.com/firearm-acc...g-sig-p320-p365.html Ten-round, flush-fit, flat or finger-hooked base plates (according to the illustration, comes with both), $32.95. Larger sizes for a little more. I ordered two from MidwayUSA for $31.30 each as part of a larger order.

Yep. These have been out for about 6 months now.

Available in 10, 12, 15, and 17 round versions. And unlike their PMAGs or Glock mags, these are metal magazines.

Reviews are good. At $28-$30 each online, they're a good budget alternative to the factory 365 mags, which usually run ~$45-$50.

(Though if you qualify for Sig's qualified professional discount, you can get factory mags for $30-$35, which lessens the savings of these AMAGs.)

Having magazines pre-loaded before going to the range saves a lot of time at the range. Any cost savings while maintaining quality and performance is welcome.

For what it's worth. I've got one from my thread about the ported P365XL I just got back. Had it cerakote'd while he had it and ordered it for me.

Seems just as good as a Sig mag from Sig for what it's worth.

Best part about them is that they are stainless so they won’t rust like the sig mags.

I've never had an issue with factory P365 mags rusting.

I did buy a used magazine that had a section of rust, but once that was cleaned off, it hasn't reoccurred.

I have about thirty Sig 365 magazines. None ever rusted.

I carry mine all day at work, and after, all 5 sig mags I have rust regularly, I have a couple
buddies with 365’s and they have the same issue, always rusts along the base plate. Since I switched the magpul mags it’s not longer an issue. The finish on those mags is cheap. I’ve owned and carried other sig pistols over the years and never had this problem with their mags. To be fair I had the same problem with the shield plus as well.

Limblessbiff,
Where are you located?
And what is the exposure of the mags to the environment? Example: Are you an ocean beach cop that exposes you to a lot of salt water spray?

He could also just be one of those minority of folks with extra corrosive sweat/body chemistry.

I had a buddy like that. Most any gun without a seriously robust finish that he carried would end up rusty and often pitted. Even handling a gun without wiping it down afterwards could cause rust. He even had issues with stuff like belt buckles and the metal tops of ball caps.

I have quite a few factory P365 mags and I live in a wet, humid area, Florida along the Gulf Coast, and none of my mags have any indication of rust.

Some folks have, as RogueJSK said, something in their sweat or body chemistry that causes some metals to rust yet other folks have the same metals and have no rust.

I recall back in the 70s, the blued backstraps on Smith 10s, 15s and 19s were rust magnets for some officers while others, carrying the same guns, never seemed to rust.

Maybe this is a similar situation.

Bob

Range report: they fit and function just like factory.

Having little use for the flat bases that came installed, I put the hooked ones on. This was easy, in part due to the very large - close to a quarter inch in diameter - retaining peg. I also like the individual counter holes on the back side.