My friend is looking to get an AR. He asked me which lower could accomodate the widest variety of calibers, the AR-15 or the AR-10. It got me to wondering what all of the options are these days.
So what calibers are available for each and what calibers are possible that have not been done, like a .223 upper for an AR-10 lower?
Thanks in advance.
So what calibers are available for each and what calibers are possible that have not been done, like a .223 upper for an AR-10 lower?
Thanks in advance.