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Thread: How do you disassemble M3 Greasegun magazines?

  1. #1
    Registered User
    Join Date
    Dec 2005

    How do you disassemble M3 Greasegun magazines?

    Cleaning and lightly oiling my mags, but i can't seem to figure out how to disassemble these.

  2. #2
    UZI Talk Supporter
    Glockdude1's Avatar
    Join Date
    Apr 2003
    Beaumont, Texas
    Do not take them apart. They were made NOT to come apart. Grease gun mags are tough, you should never have a problem with them as is.

    Try "Fixing" these:
    Last edited by Glockdude1; 02-07-2006 at 06:06 AM.
    Stay Safe,

    "If War is HELL, Take a better Pitchfork than the DEVIL!!!"

  3. #3
    Registered User tacdrivrnc's Avatar
    Join Date
    Nov 2004

    but if you must...

    I wouldn't take them apart unless they have grit and sand in them.
    I've had that problem with some NIW ones before...very annoying.
    Anyway, there is a little tab on the baseplate that looks like it lifts up or can be bent. You will also see a indented spot, like a small cut were someone jabbed a screwdriver into it, on the baseplate. This is an internal catch tab, or lip, that keeps the baseplate from sliding off. You need to lift the tab on the baseplate just enough to allow the catch tab to clear the bottom on the mag.
    DO NOT just bend it up with something. There are a lot of things working against you. It may take 3 hands, and the mag spring is very strong.
    Take a strong flat screwdriver and carefully work it under the tab slightly and gently. You want to do this just enough for you to lift the tab so that a "catch tab" on the inside of the baseplate will clear the bottom of the mag. But not soooo much that you actually put a bend in the tab. At the same time as you're working the screwdriver under the , apply pressure with your thumb to the baseplate in an attempt to slide it off until the catch tab clears the side of the mag. At this point you should not have bent the main tab up too far and it should spring back to its original position. If you used too much force with the screw driver, then gently push it back down. Remember, you may have to push it back up a little to get the baseplate back on. So try not to bend it back and forth.

    Again, you should only need to disassemble your mag if you have grit and gunk all in it. It's too much of a pain just for regular cleaning.

  4. #4
    UZI Talk Life Member
    firefighter's Avatar
    Join Date
    Nov 2004
    At the center of the Uzi triangle
    Thanks for the info on G/G mag cleaning. I guess I didn't know they didn't have conventional mag floorplates.
    Speaking of grease gun mags.. I've only ever purchased 3 for my Mac 10.
    I have to slightly modify the mags by filing about 1/16" off the mag stops and the mag catch to get them to engage the mag release. I understand this is normal in some Mac 10's.
    My question is.. are all grease gun mags the same?
    I see some advertised as "modified" or "unmodified" G/G mags for sale.
    I just want to make sure when I order some more, that I'm getting the right thing.
    Sorry for hijacking the thread.

  5. #5
    UZI Talk Supporter
    CIB's Avatar
    Join Date
    Oct 2004
    All GG mags are the same, but there have been a bunch modified! For a several of different firearms, M10, Stemple, AR. Usually this mod is for the mag catch.
    Necessity is the plea for every infringement of human freedom. It is the argument of tyrants; it is the creed of slaves. -Sir William Pitt, The Younger 1783

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