excuse my ignorance and lack of knowledge on this, i tried the search (including the google snipers hide) and there was only a few threads that commented on this , and im still none the wiser. im interested in getting a 223 but i want to be able to fire 5.56 as well. im planning on getting a remington, my question is how difficult or how much hardship is it to get it converted so it can fire both rounds ? what exactly is involved, will i have to rebarrel or can the original barrel be worked on? thanks in advance for your help, i dont know anyone who owns or has knowledge about this chambering