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Author Topic: R51 Gen 1  (Read 1131 times)

Indyman

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R51 Gen 1
« on: June 22, 2018, 08:31:22 PM »
Does anyone know where I might find a R51 Gen 1 for sale? Id like to study and catalog all the changes Remington made ...  Thanks!

R51Fan2017

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Re: R51 Gen 1
« Reply #1 on: June 23, 2018, 12:07:19 AM »
Does anyone know where I might find a R51 Gen 1 for sale? Id like to study and catalog all the changes Remington made ...  Thanks!

Unfortunately, you are going to have a tough time doing that. Most all of the Gen1 pistols were sent back for rework after the disastrous release in 2014. If there are any remaining, (which there is probably a handful) the owners may or may not be easily persuaded into selling them. I wish I had a Gen1 in my collection!
"A woman who demands further gun control legislation is like a chicken who roots for Colonel Sanders."

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Indyman

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Re: R51 Gen 1
« Reply #2 on: June 23, 2018, 12:20:03 AM »
I realize that. If I cant find one for sale, maybe someone would let me examine one in their collection .... either way, I think it would be useful to document the changes between the Gen 1 and Gen 2 guns. Thanks!

R51Fan2017

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Re: R51 Gen 1
« Reply #3 on: June 23, 2018, 05:15:23 AM »
I realize that. If I cant find one for sale, maybe someone would let me examine one in their collection .... either way, I think it would be useful to document the changes between the Gen 1 and Gen 2 guns. Thanks!

By all means! Someday, collector's 50 years from now may be interested in these little guns. The more info gathered now while it is more readily available, the better! If I run across one, I will be happy to let you know.
"A woman who demands further gun control legislation is like a chicken who roots for Colonel Sanders."

                  - Larry Elder

funflyer

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Re: R51 Gen 1
« Reply #4 on: June 24, 2018, 06:27:42 AM »
I think it would be useful to document the changes between the Gen 1 and Gen 2 guns. Thanks!


I remember seeing something about all the changes, either on youtube or another website. I just can't remember where.

sebvox

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Re: R51 Gen 1
« Reply #5 on: March 31, 2020, 04:48:46 AM »
The next best thing to owning a Gen 1 is downloading the 3D model in "World of Guns".  The model is the Gen 1 so you can examine all the parts there.  There are a couple videos out on the tube that show the R51 3D model.  https://www.youtube.com/watch?v=JnxmpF6Iouc

These are the changes between Gen 1 and Gen 2 that I have come up with so far:

  • Gen 1's were manufactured in the Para USA plant in Pineville, NC marked "Charlotte, NC"
  • Gen 2's marked "Charlotte" were remanufactured in the Huntsville, AL plant to receive the new disconnector and other revisions.  Newly manufactured are obviously marked "Huntsville" and have the "H" designation in the serial number.

  • Gen 1's have the R51 logo rearward next to the slide serrations.  Poor milling on inside of slide and rough racking.
  • Gen 2's have a redesigned slide with the R51 logo forward near the ejection port to demarcate Huntsville milled slides.  The slide now has an FNC finish and smoother function.

  • Gen 1's had a thin, flat magazine base plate known to deform.
  • Gen 2's had a thicker, rounded base plate with the addition of a "ramp" on the follower.

  • Gen 1's had a smaller, shorter disconnector.
  • Gen 2's were refitted with a longer disconnector to address trigger reset issues.

  • Gen 1's ejector was fixed and had a larger profile.
  • Gen 2's ejector now pivots/lifts and has a smaller profile.

  • Gen 1's action spring (around the barrel) was shorter, bushing was known to become scratched on exterior. The spring wasn't strong enough to put the slide back into battery, in some cases.
  • Gen 2's action spring is longer and coated, bushing is replaced with a hardened chrome bushing.  The spring is stronger now and 1-finger racking is gone now.

  • Gen 1's breech block caused racking issues and cartridge deformation.  The magazine also interfered with the breech block when inserted.
  • Gen 2's breech block was redesigned with a notable "shelf" added for a larger surface to place the cartridge in battery (to help with nosedives).  The bottom deck was raised/lowered to not foul with the magazine.  There is a bevel on the leading edge and an eased out area near the extractor neoprene pad.  The ejector is redesigned to have a shorter "claw" for precise engagement.  The firing pin is redesigned to have more mass.  The barrel was redesigned to remove the "wings" on either side of the feed ramp.  The locking grooves on either side of the where the slide locking pin goes through were reduced.

  • Gen 1's grip screws were known to become loose.
  • Gen 2's a rubber O-ring was added at each screw as a lock ring.

  • Gen 1's front and rear sites were known to drift loose from the dovetail groove.
  • Gen 2's front and rear sites were redesigned to have a set screw to hold them in place.

  • Gen 1's sear pin, upper manual safety pin, and magazine catch pins were known to drift loose.
  • Gen 2's the pins were replaced to stay driven home.

Feel free to add and list other changes.
« Last Edit: May 22, 2020, 08:41:59 AM by sebvox »
- Erik

scouts owner

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Re: R51 Gen 1
« Reply #6 on: March 31, 2020, 09:06:33 AM »
I own a Gen 2 that is marked Charlotte.

sebvox

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Re: R51 Gen 1
« Reply #7 on: April 03, 2020, 05:59:57 AM »
Yes, scouts owner, you are correct.  My statement says "Gen 2's were remanufactured... in Huntsville, AL".  So the leftover Charlotte parts were sent to Huntsville for Gen 2 re-manufacture and re-assembly. 
« Last Edit: April 29, 2020, 04:35:12 AM by sebvox »
- Erik

sebvox

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Re: R51 Gen 1
« Reply #8 on: April 19, 2020, 06:26:07 AM »
I have updated my list of changes between the Gen 1 and Gen 2 in the previous post.
- Erik

R51Fan2017

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Re: R51 Gen 1
« Reply #9 on: April 19, 2020, 09:11:36 AM »
Very well documented with pictures sebvox! Thanks for the effort to get that posted. That should be stickyed by the moderators! HINT HINT.
"A woman who demands further gun control legislation is like a chicken who roots for Colonel Sanders."

                  - Larry Elder

sebvox

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Re: R51 Gen 1
« Reply #10 on: May 03, 2020, 07:48:14 AM »
I made a video that shows the differences in the Gen 1 vs the Gen 2.  I show the R51 operation in slow motion so you can see how it works.  Be kind, it was my first video on youtube.

https://www.youtube.com/watch?v=D_oAMuKg4CQ
« Last Edit: May 06, 2020, 12:58:54 PM by sebvox »
- Erik

 

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