Short version. If you have a problem with last loaded round from the magazine "stove pipe" feed jamming or completely exiting the pistol, you may need stronger magazine springs. Glock 43 magazine springs fit the R51 magazine. You may or may not need to clip a single coil from the bottom. I used the +15% springs purchased from Ghost Inc. It appears to have fixed this problem for me. All of my magazine followers already had the legs trimmed about 1/8", prior to this.

https://ghostinc.com/43-plus-15-magazine-spring-for-glock/

Posting this for others who may benefit.

My two R51s occasionally had last round "stove pipe" feeding failures, where a loaded round would end up with bullet out of the ejection port. Occasionally the bullet would fly out of the gun completely. I found this to be vexing.

I assumed it was soft magazine spring, but couldn't find report of an alternate. So I lived with it. A range trip 2 weeks ago produced this loaded last round stove pipe a few times, and once I  got home I started a-Googling for a solution again.  This time I got a hit to an old thread on this very forum, which said Glock 43 magazine springs from Ghost work in the R51 magazine, if you clip a coil.

So ordered a batch. I've tested moderately well, started with just a few mags with the G43 springs, and have had no "last round stove pipe feeding failures". I was able to reproduce the stove pipe with a few stock spring mags. One mag needed adjustment to G43 spring to load all 7 rounds.  I've now switched 9 magazines to G43 +15% springs and no stovepipe or other problems. Feeds a full mag of 7 rounds with 1 in chamber. A few times I tried the full G43 spring and it worked great, others I clipped one coil. One needed a little adjustment to bottom coil so 7 rds would load. It looks like a legit solution at this time.

I am happy.

Luv my R51 - unfortunately the only 3rd party accessory outfit, DangerCo, is apparently no more.

Welcome to the forum.  There is not much activity here anymore but the forum is packed with a lot of useful information.  You are welcome to post any questions or what your experience has been with the R51.

Greetings from Buckeye county!! OHIO
New R51 owner

They would have had a winner on their hands with the Gen 2 if they had fixed the mags. As it is, I was able to tweak mine for better reliability. Love the R51 with the exception of field stripping the thing - it makes a Ruger Mark 1,2,3 look sane by comparison!

Welcome crowtalks!  Not much action on this forum anymore but there is a lot of useful information.

I am a life-long gun lover and I have owned several Remington rifles, but somehow I overlooked the Remington pistols until I stumbled across a model 51 a few years ago.

I fell in love with the design, size and feel of the weapon and then several months ago I found out about the existence of the R51.

I was told to stay away from them by friends, but that just made me want to research them to find out why.

I ended up finding one of these sadly panned pistols and bought it.

This little orphan has seen very little action and I figure that even if I get an occasional stovepipe, that with the gen II guns, that like many other weapons, there probably is a break-in period I will experience.

A lot of guns are known to need as many as 200 rounds fired through them before they are "broken in" but people don't castigate those weapons.

I guess these guns hit a point of no return of criticism and that was sad for them as well as for Remington...one thing that I don't understand is why it seems Remington never seemed to correct the follower issue in the mag.

Anyway, I'm 66 and live in the beautiful state of Tennessee!You cannot see attachments on this board.

Not since DangerCo went Tango Uniform.

Ok. Thanks.

Nope.  Only option is to send the barrel out....if that's even an option now.