Norc M14 - Rusting Piston

NavyCuda

NavyCuda

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I do my best to keep my rifle nice and clean, but avoid lubricating the piston area. So because my rifle spends months at a time in the safe without getting used I'm guessing the humidity is causing the piston and cylender to rust.

It doesn't cause the piston to bind up, and still freely follows the op rod down with gravity alone, but the rust is really starting to bother me. Is a small amount of oil in there going to be an issue or do I have to "man up" and buy some better quality parts?
 
unless you shoot corrosive ammo i don't think there's anything to worry about. some people put ####e loads of rounds through gas systems without cleaning them. putting oil in there is the last thing you want to do
 
it's a HUMIDITY problem- we ran into the same thing in spades "over there"- DIG OUT YOUR MANUAL, turn to page 33, and follow the directions for cleaning the piston-if you cannot cure the humidity problem, it might be prudent to remove the piston and put it in vapour barrier bag and stick a dissicant pack or 2 in there with it- if you do decide to oil the piston, you have to CLEAN IT THOROUGHLY AND REMOVE ALL TRACES OF OIL before installing it back in the rifle-oiling the piston is a well-known source of stoppages and jams- page 32 of the manual advises "SATURATE PATCHES WITH BORE CLEANER AND WIPE THE EXTERIOR SURFACES OF THE PISTON AS CLEAN AS POSSIBLE. install the bore cleaning brush on a section of the cleaning rod. Moisten the brush with bore cleaner, and clean the interior of the piston. WIPE THE PISTON DRY, BUT DO NOT OIL. The gas system incorporates a self-cleaning section and functions within VERY CLOSE TOLERANCES. a piston DOES NOT have to be SHINY to function- the addition of oil or lubricant could lessen the velocity of the piston enough to prevent proper operation
 
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I had this problem the one time I went deer hunting in the pouring rain with my M-14. By the time I got home it was horribly rusty inside. I wiped everything down with bore cleaner and it came off quite nicely. I would think about putting a dehumidifier setup in your gun case if it is that bad. Can't be good for your other guns.

Although looking at your profile I see that you live about five minutes north of me. I don't have this problem. Might want to look at where your safe is. Basement? Garage?
 
What type of starage you using? Do you have an actual safe, or a stack on cabinet? If its a actual safe, a big pack off desiccant will probably be the easiest solution, just have to "recharge" the pack every few months by putting it in the oven on super low.

If its just an stack on cabinet, then all your desiccants, dehumidifiers, ect will be useless as the safe is not air tight and the moist air will simply circulate into your safe. A light coat of oil is probably your best bet, like mentioned above, you will just have to really clean the gas system before you shoot it.
 
If you are storing it for a while, why not keep some grease or oil on those parts just like it came from the factory.
Then when you are going to use it, clean it off before firing, although I doubt anything bad would happen if you forgot to clean off.
 
I have had the same thing happen to mine . I just clean it every now and then .Well i rarely clean my Chinese rilfes .I really pounded on mine trying to kill it and it just would not die !
I figured out the Chink M14's were pretty good so I started buying as many of them as I could find.SA inc, not as good as the Chinese has been my experience . 60 rds and I lost an extractor out of a NIB SA inc loaded .
 
For $125 you could just get a compete GI spec stainless gas system from 762mmfirearms and never worry about it again ;) I have them on two M14's and they are the cat's @ss. Way better made and better fitting than the Chinese gas systems.
 
Claven2 said:
For $125 you could just get a compete GI spec stainless gas system from 762mmfirearms and never worry about it again ;) I have them on two M14's and they are the cat's @ss. Way better made and better fitting than the Chinese gas systems.
Click to expand...

I probably will end up doing that...
 
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