P07 P09 and P10C Mag Differences - How to make them interchangeable.

[Underwhere]

I think this has been covered a few times but I'm still a little fuzzy on what is going on with these mags.

I have a P07 and P09. These are a few years old.
I also have a P10C which is pretty new.

Here are the mags.

I noticed that the P07 and P09 don't have the double cutouts on the sides...It appears to me that the upper cutout is what the P10C uses to hold the mag in the gun.

So the P07 and P09 magazines do NOT fit in the P10C because there is no cutout to retain them.

I see that the P09 has no rectangular cutout at the top of the magazine. But I do NOT see anywhere on any of these 3 guns that actually uses that space for anything...though I do recall seeing some videos showing that you can take a P07 magazine and make it work in a P10C by cutting that rectangle out.

So does anyone know what's going on here? Was the P10C mag catch redesigned and used to require that rectangular cutout?

I'd like to modify mags so each mag will fit in every gun (except the P09 of course)

I'm thinking I need to cut the double mag catches on the P07 and P09 mags...but I don't think I have any reason to cut the rectangular piece out of the P09 mag.

[seebee62]

Here are my P07 and P10C mags.

The P07 Mag has the single cut on both sides and fits my P10C perfectly.

My P10 is sku 91521 FDE ambi mag release. Although I swapped it out for Apex non ambi release. Both mags fit before I changed the release.

A P10 newer than mine I think it’s sku 91531 has a non ambi release. If the mag release was modified more than that I don’t know.

My P10 uses the top rectangular notch to catch the mag. My P07 uses the side notches.




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[Underwhere]

Here are my P07 and P10C mags.

The P07 Mag has the single cut on both sides and fits my P10C perfectly.

My P10 is sku 91521 FDE ambi mag release. Although I swapped it out for Apex non ambi release. Both mags fit before I changed the release.

A P10 newer than mine I think it’s sku 91531 has a non ambi release. If the mag release was modified more than that I don’t know.

My P10 uses the top rectangular notch to catch the mag. My P07 uses the side notches.




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Hmmm good to know. My p10C doesn't use the rectangular notch at all.
It works like a Glock or most other guns where the mag catch engages the slot on the side of the magazine.

[Underwhere]

I'm going to cut a P07 mag open tonight and see if I can make it fit.

If successful I'll cut all the P07 and P09 mags for the second mag catch.

Maybe I'll even do the rectangular cutout just for fun.

I'll post pictures if I do.

Seems easy enough to do with a Dremel and cutoff wheel.

[eastman]

The magazine you marked as "P-07" is the P-10c magazine for the original generation P-10c pistols with the ambi mag release. The rectangle is the locking cutout.

Your "P-10c" labeled magazine is the non-ambi type, so it has the second set of side notches (along with the ambi-P-10c rectangular notch).

[Underwhere]

The magazine you marked as "P-07" is the P-10c magazine for the original generation P-10c pistols with the ambi mag release. The rectangle is the locking cutout.

Your "P-10c" labeled magazine is the non-ambi type, so it has the second set of side notches (along with the ambi-P-10c rectangular notch).

Trying to keep this straight.
The rectangular piece is for the ambi mag release p10c.

And the new p10c version no longer uses it?

[Underwhere]

I cut the P07 mag tonight. Not too hard but I wanted to take my time and go slow.

I cut both sides even though I only needed to cut one. Why not... Though I try and stay away from lefties.

Mag locks in just fine. No adverse effects.

It took about 45 min but I think I can do it faster.

[Underwhere]

The p09 has an additional square cutout and I just realized there would be a lot of metal missing from that area if I cut the slots to make it fit the p10c.

But it also doesn't seem flimsy at all.

Maybe I'll cut it and see what happens.

Then all 3 mags would be interchangeable between all guns (obviously not small and large frame).

[seebee62]

Great Job.


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[Underwhere]

Tools: I am using a cutoff wheel, a tapered carbide bit and a square file.

I think I'll try the P09 mag tomorrow. I have it marked up.

[eastman]

The magazine you marked as "P-07" is the P-10c magazine for the original generation P-10c pistols with the ambi mag release. The rectangle is the locking cutout.

Your "P-10c" labeled magazine is the non-ambi type, so it has the second set of side notches (along with the ambi-P-10c rectangular notch).

Trying to keep this straight.
The rectangular piece is for the ambi mag release p10c.

And the new p10c version no longer uses it?

Correct. The non-ambi P-10 series use the upper side notches. The new mags still have the cut-out to remain backwards compatible with the ambi P-10c pistols. Simplifies the stock if there is only 1 mag for the P-10c ambi, P-10c non-ambi and P-07.

[Underwhere]

OK so I did both P07 mags and one P09 mag.

I have to finish one more P09 mag.

I didn't do any rectangular cutouts.

Seems to work fine in the P10C

[Underwhere]

Disclaimer - I have not tested these modifications yet so if you choose to make these changes to your mags please understand that they are untested so far.

[EG09]

Really nice job! I may try it with a couple of my P09 mags.