That is a WW1 era DWM mauf standard Luger. I believe the magazine is an armorers replacement mag. Looks like the mag could be a Erfurt make, but would need to see the markings on the floor plate to confirm. Markings on the front strap of the grip look like unit markings, not an expert on those and I don't recognize it as anything else. Holster looks correct to the vintage. Does it have any markings on it? Contact peter, the luger collector (look up luger collector Canada) in regards to having it re barreled, or collectors source. Hopefully it is registered a prohib currently, most will not touch them if they arn't registered.