I invite all of  you to join my Fb page Remington R51 Owners and shooters. Please read the pinned post. All I ask is for folks to be decent and respectful.
Really need some folks more knowledgeable than me on the R51.

I liked the features of the R51 from the beginning. Size, weight, grip safety and shaped for easy carry. I was very disappointed when the Gen 1 was a disaster.  Had to wait a long time to get the Gen 2. The only failure I have had is with the XTP bullet. Round nose FMJ  and HP have fired flawlessly in mine.
I have 1911s, M&P Shield, Glock 26, Ruger LC 9s, and an old AMT .380 Backup with a grip safety. All good carry guns, but they don't stack up to the R51 in many ways.
I must admit, I had reliability concerns with the R51 when I bought it, but liked it well enough to take the risk.
Love this pistol for many reasons.
Please feel free to join my Fb group. Just search Remington R51 Owners and shooters.