Very nice example of an M1903 Springfield. From the serial number, this is 1942 production.
Very interesting can opener. Just remember, can openers are always loaded. I once had a Russian guy show me how to open a bottle of wine without a corkscrew if you had sufficiently decent knife to stab and twist the cork out with. You won’t keep a Russian from his drink, apparently.
Re the ‘bottle opener’ : That’s not a bug, it’s a feature! :)