Check out the forums at http://www.1919a4.com for lots of information on these. I haven't seen one from Atlantic, don't know how they measure up. If I were buying a built gun, I'd probably look for one of John McGuire's. I built my own from a parts kit for considerably less. I've converted mine from .308 back to .30-06 as it's cheaper ammo; there are also conversions around for 8mm and 7.62x54R.