I'm not sure if this is the right place to post this, but a friend of mine recently went on a 'WW2 Shooting Day' with a UK company called 'Skill At Arms' - apparently all the firearms were .22 calibre conversions for the bolt action rifles (and single shot, not mag fed, for the Lee Enfields and K98s), and .22 modern replicas for the others (e.g. MP40, MP44 etc), with some modern .22 rifles as well. The thing is that their website really seems to suggest you are firing the real thing, so if you are booking anything like this, just be aware what you are actually getting, versus what the website suggests. In the end he enjoyed it, but not as much as he was expecting.
It may be a UK thing, where they can only offer .22 guns, but if you are not a regular firing live weapons, it is worth being aware of this given that some vendors don't seem open about this for some reason.
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