This time I have to give myself a
“that a boy”
I’ve used that trick of tracing the part before bending.
Interesting rifle.

I have two Remington Nylon 66 Mohawk 10C'c.  One was my dad's and was bought in the late 60's.  The other was my brother's that he bought on the mid 70's.  Both have this same feeding and jamming issues. That's why my brother gave me his Nylon because he could not find a fix and no gunsmith in our area wanted to tackle this issue and advised him to use it for parts. They said that the Nylon's weren't of any value and not worth the effort to repair them.  So I followed your excellent video as a guide.  However I did not take out the firing pin/spring etc.. I found it very easy to get at the release button tangs from the bottom after removing just the trigger guard.  And then I had access to the screw to remove the metal clip glide and securing button mount flange.  Just the one pin was needed to be removed to get the trigger guard removed.  Your "tracing" the angle trick was a GREAT idea!  I was able to use the first tracing as a template for the second one.  After doing this, giving them a quick cleaning along with an oiled cloth through the barrels, I was able to cycle 4 original OEM ten shot clips through each rifle with NO feeding/jamming issues. THANK YOU for posting your video fix!  BTW... there seems to be a resurging market and growing demand for these Remington Nylons and depending upon what model and condition, they are valued from $400 to $2,000 US funds in working condition.  And here I was contemplating about taking them to the RCMP for decommissioning and disposal.  Again, Thank You!

Great video! Gave me the confidence to take the magazine latch off my 10c and adjust it such that the rifle works well now!

Great job!!!  Finally someone has properly addressed this issue.  I have owned two 10C’s that had the same problem.  Through some experimenting on my own, I discovered the true fix was just as you described it.  The argument that the 10C and the 77 use different magazines is not accurate, they’re the same gun.  They use the same magazines as does the Remington 581 and 541.  Bent guide rods have been the culprit on both my rifles.  I sold one of my 10C rifles on GunBroker.  The buyer claimed I had sent him the wrong magazines and in his infinite wisdom, butchered two brand new, perfectly good magazines by “trimming” material off the magazines based on bad advice he received from some hack.  I refunded him his money, except for the two magazines he ruined, and got the gun back.  Long story short, I repaired the gun using the fix you describe in your video.  I followed up the repair with a video demonstrating the rifle functioning perfectly.  The 10C and 77 get a bad reputation as a result of bent or misaligned guide rods when the fix is rather easily achieved as you so clearly and accurately described in your video.  Again, thanks for documenting your successful repair.

As always good job

Good job. My replacement magazine will not lock in. I wonder if it could be a similar issue?