I too have struggled with the reassembly, especially with my old weak hands.  The first time I tried it took me at least 15 minutes to get it on and I was not sure what l did to make it go on.  After spending some time practicing l found that if l get to the point where the slide stops, l change my grip to an overhand grip and then proceed to rack the slide.  This will push the barrel forward slightly and allow the firing pin block to rock down and slide over top of the frame rails.

Well written and is more inline with my own impressions than most of the reviews l have read.  Thanks for sharing your review.

Hello to all, glad to find this forum as I am a new owner of a R51.  I got it about 4 weeks ago and have put nearly 700 rounds through with only a couple of hiccups, nothing major.  I have been waiting for this gun since the first release and happy that it came back after rework ((?)).  I see that the membership is a little low right now but I'm sure that will change fairly soon.  This gun is also the talk on other forums and I'm looking forward to learning some things from being here.  Thanks for having me as a member.