Stiffer magazine springs have also solved the last round nose up jams for mine too.

So my Pederson block developed a crack across the breech face. I ordered a new block from Century Arms Surplus Store.  I installed the old firing pin and the old extractor into the new block.  The only problem now is that it doesn't extract the fired round about 1 out of every 8 to 10 shots.  The extractor seems to fit in the rim properly and is in the proper position relative to the breech face. The R51s have a roughly finished chamber which scrapes up the brass, but the spent case is not expanded enough to get stuck.  The spent case will fall out the chamber easily.
Any ideas or fixes that worked on your R51?

Has anyone tried a 1911 holster?  My Ruger LC9s uses the same holster as a 1911 (Commander maybe) DeSantis D6,  The holster is just a little short for the R51.  One that is just a little longer in the barrel section would allow the trigger guard to seat.

Quote from: RED HORSE on June 11, 2024, 03:01:12 PMDeSantis Soft Tuck IWB.  It is the only IWB holster with a hook turned outside so you are assured the holster remain inside the bel when the pistol is withdrawn.

@RED HORSE

Which "version" of the Sof-Tuck is your holster?  B6?  Should be marked on the leather under the "106",

Thanks in advance!
Marc

Hi there...
  Can you please post a picture of your magazine follower trimming? I ordered the springs to try first, then trim if necessary.

Thanks in advance!
Marc

I picked up 3 from the local Fleet Farm when they were clearanced out several years back for about the same price. 

I stop in every blue moon to see if there has been any action.  Happily there is still the faintest of heartbeats.

It is good to see that folks are still providing useful tips.  I'll remember the G43 spring trick if I ever run into problems.

The R51 was a cool gun that came out at the wrong time with way too many problems.

I ordered a couple more mags from Bud's as well, thanx to this thread. I'll have to pop over to Wolff and get the springs now. Mags were $11.99 - but they charged me $14 to ship them which is highway robbery - but looking at the total for a pair of mags, it still is an OK deal.

I did the Glock springs and I also did a bit of filing on the front edge of the mag to smooth it out. Dunno if that did anything, but I haven't had a stovepipe the last several times I've shot the thing... FWIW...

I have now taken my two R51 pistols to the range 4 times, using the Glock 43 magazine springs in the R52 magazines. More than 200 rds fired.

No failures of any kind. This appears to be an excellent option. Hope this helps someone.