Unknown AI magazine identification

[USMCsean]

Can someone here identify this magazine?

I believe it to be an unmarked AI mag, but not sure on the type. It’s a .300 Win Mag type, single stack. It’s slightly taller and slightly wider than my other AICS .300 WM mags. The top feed lip to bottom of notch seems to be the same height. The unknown mag fits just like an AICS mag in my AICS 2.0 chassis. The stampings seem to be the same, wide rib up front and skinny rib in back. Mag retaining notch at back seems to be the same shape. Caliber markings on both seem to be almost the same and line up exactly when measured from feed lips down. The finish feels the same on both mags.

I tried to keep the unknown mag on the left while taking pics, but in one I didn't.

The magazine came out of a DRMO'd Mk13 Mod 5 case. I am not sure if that helps in any way.

 

[Huskydriver]

Looks like a 3.85" 338LM aics pattern single stack mag

 

[USMCsean]

Wouldn’t that be marked as such on the spine?

 

[Huskydriver]

You would think that's why I said "looks like" ?. Have you pulled the floor plate off? Curious if their are any marks on the inside indicating who made it.

 

[USMCsean]

LOL. I have not. I’ll have to tonight.

 

[USMCsean]

Took it apart and there no markings anywhere.

 

[USMCsean]