George, I have acquired many of those Remington offferings...a couple of R1 .45 ACP, a Rm 380, R 51, DPMS AR, several Bushmasters and probably more with all the companies they gobbled up. In fact the AAC 300 Blackout Handi Rifle i am holding in the photo is a Rem holding company.
The one thing i can say aboutall of them is they are well made and have functioned flawlessly. My R51 does not get five stars from me though, not because of a function or manufacturing problem but because my arthritic hands have a hard time with reassembly.