Can someone please give me some aedvice on some tactical sling mounts for an m4 barrel with tele stock and picatiiny rails. >Is mounting them from the side of the rifle the most comfortable way rather than slung over the your back? Can you please give me some advice on mounting hardware <brands and models>.I undurstand I will need to install a swiveling telecoping mount, as well as a swivel side mount on my rails for a 2 point sling. Right?Unfortunately I dont think Bushmaster offers one. Sorry, I'm kind of a newbie since vietnam era M16's. All help appreciated. Thanks, CWC