Assuming someone in your colony knows how to maintain guns then I doubt that degrading guns over time will be an issue. Life isn't like Fallout 3: guns don't degrade over a timescale of hours, as literally dozens of rounds are put through them. Since the game is only going to last for many months and not many years, gun degradation should never be an issue.
It's also kind of silly for a gun to be scrapped when it's dropped. Sure, X-COM does it, but there's a good story reason put in for why it happens. Real guns can survive being dropped from a few feet in the air.
It's also kind of silly for a gun to be scrapped when it's dropped. Sure, X-COM does it, but there's a good story reason put in for why it happens. Real guns can survive being dropped from a few feet in the air.