Please help me identify this magazine

[Bottom Gun]

Can someone please help me identify these magazines? I picked up a few of these in a package deal and I have no idea what they will fit.

A couple of them have a Cobray emblem. They measure 8.25 inches and are tapered from front to rear. The rear is wider than the front face. They appear to be 9 MM steel magazines with steel followers.
The rear face has a shallow rib which runs the length of the magazine. This rib has a notch about midway which obviously fits a magazine catch. There are no other provisions for a magazine latch.

I would be very grateful if someone could identify these magazines for me.

Thanks for your help,

Ken

 

[SDC]

They look like they'd fit the M10/M11 series, but without trying them in a gun, there's really no way to be sure. The fact that they're marked as Cobray mags narrows it down to those two.

 

[Riss]

If they have the Cobray logo there is no other alternative than a Mac mag. M-10 is a 45, or possibly a 9mm. M-11 is a 9mm I think and the M-12 is a 380 IIRC.

 

[Bottom Gun]

Thanks for the help.
They are definitely 9 MM magazines. I tried loading both .45 and 9 MM in them.
Are the M-10 and M-11 magazines interchangeable?

What is puzzles me is the MAC steel magazines I have seen for sale on Gunbroker have a second thickness of steel at the top, a rectangular doubler tab welded in place. Possibly to serve as a magazine catch? These magazines do not have that doubler.

Can anyone comment on this?

 

[Dark Skies]

"Are the M-10 and M-11 magazines interchangeable?"

MAC 10s were chambered for .45 ACP and 9 mm

MAC 11s were chambered for .380

.380 ACP is also known as 9 mm short. It's actually 9x17 mm whereas 9 mm is a little longer at 9x19 mm

In terms of magazine specs I'd say they would probably be swappable with only a 2 mm difference in the intended round. If they're identical externally / internally I'd reckon that the later MAC 11 used the earlier MAC 10 9mm mag to keep costs down. I could, as Doc might say, be 1000% wrong though.

 

[Bottom Gun]

I should have asked if M-10 and M-11/9 mags are interchangeable. I doubt the 9 MM magazines will work with .380.

 

[kanook]

mac-11 9mm is smaller than mac-10 45acp and 9mm. and a mac-12 380acp is smaller buts runs like a raped ape