I have an excellent condition Remington R2Mi .50 BMG rifle. This is a very accurate gun; it was mostly shot with 750 amax, and it was a ragged hole gun at 100 yards. I never took it to the 2 miles it’s named for, but it got to 1800 yards and was accurate enough to hit an approximately 2’ rock 5 out of 7 times. I never shot much ball from it; but API grouped about 1.7” at 100. My round count is about 120 down the tube.
I had the trigger improved by Bill Springfield (triggerwork.net) so it is a very good about 3 pound trigger; this is a massive deal as the factory trigger pull was about 10 pounds.
Everything originally included comes with the gun. 2 10 rd magazines, the m60 style bipod, and the custom Pelican case. I also through in a piece of picatinny rail I made that replaces the bipod stud and allows you to mount a better bipod for precision shooting.
All parts are currently available at Numrich, and this design is back in production from HM Defense; I don’t know about parts commonality, but the gun looks identical.
I would guess the Remington branded version of this is the least common, as it was barely out before Remington went under. These guns were made at the same shop throughout the production run and their quality did not slip; they have Lothar Walther match barrels.