Well, since no 10-22 that I'm aware of came from the factory with a bayonet mount, flash hider or collapsable stock... all it means is that it's an old gun. I think you can add one of those features to it if you'd like? Why you'd do that, I don't know. Now, some 'pre-ban' mags would be nice (ie: standard capacity instead of the post 94 reduced capacity 10 round jobs).