Just got one of the MPA pistols that uses Sten magazines and seems like a mag loader would be very useful as the mag springs are really stiff. Does anyone know of a good source for these at a reasonable price? Haven't found any super great deals with web searches yet..
I found that the Austen sten mag loader is the best out there. Be prepared to pay $60-100 as these arent new anymore. Ebay, subguns.com, sturmgewehr.com,
Here's a pic, notice how it locks onto the mag and has a push button release. Most others have a lever type release that can break: