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MK IV mag Cleaning

This is a discussion on MK IV mag Cleaning within the Ruger Rimfires forums, part of the Pistol & Revolver Forum category; I have a new, as yet unfired, MK IV Hunter. I also picked up two more mags for a total of four mags. All four ...


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Old February 19th, 2017, 03:39 PM   #1
 
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MK IV mag Cleaning

I have a new, as yet unfired, MK IV Hunter. I also picked up two more mags for a total of four mags. All four of the mags felt like they were coated with a thin coat of some kind of heavier than normal oil or grease. So I cleaned the mags first with 91% isopropyl alcohol. This is one of the best degreasers I have found. I then put a light coat of Militec-1 inside and out. I have a mag loader that goes over the mag and pushes down on the mag follower button to load the mag. It seemed to drag some before I cleaned the mags but now it rides up and down easily with no drag. I believe Ruger used a protective coating to protect the mags until sold. So, clean your mags when you get them.

Putting the spring back into the mag was an adventure. The spring kept bending out just before I finished getting the spring in. I finally made up a piece of plastic to put into the mag to keep the spring in place while I pushed it into the mag. Now it's much easier to put the spring back into the mag.



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Old February 19th, 2017, 10:06 PM   #2
 
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If you try to put the spring back in by holding the plunger and pushing the spring into the shell, it will indeed be an adventure. To make it easy-peasy, try putting the spring in this way:

Assuming you're right-handed, hold the shell in your left hand and lightly pinch the spring between your thumb and index finger. Then grab the spring with your right hand about an inch above the shell. Push the spring in with your right hand while releasing it with your left. Then pinch again with your left and repeat until the spring is completely in the shell except for the plunger. Finally, grab the plunger with your right hand and push it into the shell.

Just reverse "right hand" and "left hand" if you're left handed. Takes about 20 seconds to install the spring.
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