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M3 Grease Gun-Are They Reliable and Easy To Maintain


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Fellow members.: As we all know the price of pre1986 fully transferable guns are out the roof. I have always longed

for a grease gun. The few times I have shot one, I found them pleasant to shoot.I am on the hunt but cautious.

 

But I have to ask, has anyone had experience with shooting 1000s of rounds out of one?. Whats the worst that

can go wrong?. Are parts obtainable? Is that even an issue.?

 

Sometimes when I look at designs, they seem flimsy I may be wrong but a MK760 seems like a firearm that is not built

to last. Any and all input is greatly appreciated.

 

Thanks

Haris357

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Haris,

Here is what the US Army says about the M3 SMG.

"Easy to carry, rugged and dependable. The submachine gun, caliber 45, M3 is all that a soldier could ask for in a weapon of this type.

In the tight spots that's better than an extra right arm."

I probably shoot over 1000 rds per year and I can't remember ever having a failure of any sort. I even fired 200 gr SWC without failures.

The only problems I've heard about, but never experienced, are broken extractors and fatigue crack at receiver rear.

Part can be found on GunBroker.com.

When the chips are down I prefer the Tommy but the M3 is a peach of a gun.

Jim C

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They shoot at a slow 450 RPM, very controllable, lighter than a Thompson, very little recoil impulse, all around fun gun. There are very few moving parts (well there are very few parts period in them) Pretty much any part can be had by watching GB as stated by JimC or walking around Knob Creek. As long as you have a spare extractor (or whole bolt) extra set of recoil springs, and use M3 guide rods then there isn't much to worry about.

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When I first got my grease gun, I was impressed how it kept going and going. I was shooting cast lead bullet reloads. Lots of smoke and residue. I decided to see how long I could shoot it without cleaning it. I didn't keep track of how many rounds but finally the bolt guide rods were so dirty and fouled up the bolt was coming forward too slow to fire the primer. That was probably 3 range sessions with myself allowing others to shoot the gun as well.
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