Quote Originally Posted by Parabuteo View Post
Chambers differ Scott. Mine has been reamed a tad slacker so it will take NATO and not stick with the hot stuff, it cycles nicely with most ammo. The NATO chamber should be a tad longer in terms of headpace IIRC to deal with any available NATO spec SS109 etc, and hot/dirty chambers.
So i mean chamber spec's are the same, clearly not though, every day's a learner . . .