The tutorial.... or how I learned to rip apart my 1911
OK, in a nutshell, here's the things I did to smooth up the NP28.
Here's the tools I used to get going.... Just a regular assortment of hand tools and a dremel. Some sandpaper of the 400 grain variety. Not in the pic is my bluing components to cover up any metal you "make shiny" so it doesn't rust.
Completely disassemble the gun - Used a 1911 manual to learn the pieces to the jigsaw puzzle.
Some of the components I found that were in dire need of care were the slide rails on the frame. They had a fair bit of rust and.. "gak" on them as can be seen here.
For now I am keeping these areas well lubed and cleaning the crap off every couple of days as the oil works its magic.
Another area that had significant rust and gak was in the firing pin and extractor channels..
Remove the firing pin and extractor, and conduct some TLC on the slide by adding a crap load of oil in the channels and letting it sit, clean out and repeat.
The extractor was a bit of a b!tch to remove, there was enough rust in there that it required some gentle persuasion.
Make sure you don't force it from the extractor claw, but from the rear of the slide only.
Take down the rest of the gun. The only pin I had a problem removing was the pin on the bottom of the frame. It needed a good whack to get it out.
After the guts are out, you can see there is some significant areas on the inside of the frame where rust is present. Also note how rough the finish on the inside is. For now, I'm simply keeping her well lubed, the rust will come up eventually from the oil, and will be wiped off.
Now the good stuff.
Remove the mag release and trigger. The trigger in my unit was quite rough on the outside. I polished lightly with 400 grit sand paper and then re-blued. The sides were much smoother after that.
The mag release itself was REALLY crunchy. Almost needed two fingers to push it in. Two things here, the outside was really rough, and the inside was rusty, and rough.
I polished up the outside with the dremel, not to much, just enough to clean it up and make it smooth. I cleaned up the inside with a small screwdriver and some solvent. Then I used a really small dremel bit to take of the rough edges inside the mag release cylinder. This improved its operation by 100%.
I finished it all up by re-bluing everything and reassembling.
The hammer was rough where it touches the sear and disconnect. I polished and re-blued in the following two areas.
The sear and disconnect were incredibly rough. Again, I polished and re-blued these two parts as shown. Not sure if I should have touched other areas or not. If anyone knows where all needs to be done to clean up these parts, let me know. I was basing my polishing on how the parts worked together from visual inspection, and the 1911 manual.
Last but not least, I polished the feed ramp on the barrel. Just cleaned it up a bit, and made it nice and slick for the rounds to slide in. Also did a bit of polishing on the top of the barrel where it moves in the slide.
After all is done and polished, I simply re-assembled, with liberal amounts of lube on everything for now until all the rusty stuff goes away.
That's what I've done so far. If anyone has ideas / questions or comments, I'd love to hear them!
From these "updates" the action has improved dramatically. It's almost as smooth as my M&P... sorta.. LOL