Your pictured GSG magazine should work just fine. All magazines for post war Colt .22 Conversion Units and Post war Colt Service Model Ace pistols will work. If you find a war time or pre war Colt Ace magazine it may or may not work. Just remember you have a “Service Model Ace” not a “Ace” even though the pistol has a “Ace” roll mark on the slide. The Ace pistol is different and (most) parts are not compatible with a Service Model Ace either the pre war version or the post war version like yours.

 

Your pictured GSG magazine should work just fine. All magazines for post war Colt .22 Conversion Units and Post war Colt Service Model Ace pistols will work.

Okay then I think I will buy that one to start.

 

Has anyone tried the 15rd ones?

 

Found this one on Ebay. Guess I done know if it is pretty, or post war. Would this work in a Service Model?

 

Yes, it will work in your pistol. Curious to know how much is it?

 

@The Bucket

Is this what you're looking for? It was in my box of spare mags from when I owned an ACE...

 

Yes! PM me!

 

Lucky you. SM ACE mags are cheap. I just paid $275 for a two tone magazine for my 1932 vintage ACE. Had to buy a minty one, as my ACE is near mint. Took quite a while to find a mint one. Big Larry

 

Your gun is gorgeous!

 

Thanks. Best pick for the $$$ on Guns Intl. Just short of a new one in its original box. Had a custom box made for it that holds the pistol, a spare magazine, and a box of period correct Remington Dog Bone 22's. Not a shooter. Looks to have been a safe queen since 1932. Big Larry

 

Something to be proud of for sure.

 

Yes. I got on a Colt auto kick and bought a Black Army and brush blue WW1 M1911's, and a couple others. Thanks, Big Larry

 

Got my GSG mag in the mail and it works better than my OEM one did.