I've got two Meggar Sig factory mags stamped mg-sp220-45 that Sig was selling a while back for sale - they were each loaded, fired two times through and then put in the safe. They function flawlessly and are in perfect shape - bonus that they were "test fired"
and work 100%.
or I'd trade for three like condition hi-cap 13rd Glock21 45acp mags straight across -
email me for faster response - leave a post here saying you"ll take them also so the line forms in the correct order..
edited to ad - these are both 7rd blue steel mags with metal floorplates and metal followers -