M3A1 Grease Gun with 30 Round Magazine
M3A1 Grease Gun with 30 Round Magazine
The weapon's compact size makes it ideal for use inside tanks, and it remains an issue weapon even today

FM 23-41: M3/M3A1 (Grease Gun) Field Manual


Operation Fully Automatic, Blowback
Caliber .45 (11.4 mm)
Muzzle velocity 280 mps (920 fps)
Ammunition .45 ACP, 230 gr bullet, 5 gr charge
Capacity 30-round detachable box magazine
Weight 8 lbs
Overall length 2ft 5.8in, stock extended
1ft 10.8in, stock retracted
Rate of fire 350-450 rpm
Effective range 50m (55yds)


Adoption of the M3/M3A1 relegated the Thompson submachine gun to "Limited Standard" or "Substitute Standard."

The widespread use of the Thompson was due mainly to the fact that it was the only allied submachine gun in mass production at the beginning of WWII. It had several weaknesses; e.g. weight and control. The Sten, for example, which was of stamped and welded metal construction and finished with a paint-like coating, scored higher than the Thompson when such things as simplicity, accuracy, weight and reliability were measured.

The .45 caliber M3/M3A1 are far easier to manufacture than the Thompson, and have a number of excellent design features in addition. The low cyclical rate of fire makes the gun easier to control than most submachine guns, not only the Thompson. The weapon's straight line of recoil thrust also adds substantially in controlling the gun in automatic fire. The gun's loose tolerances allow for reliable operation even if very dirty and, with its bolt and guide rod design make it more reliable than the Thompson under adverse conditions.

The M3/M3A1 is only capable of fully automatic operation; however, with its slow rate of fire, an experienced shooter can squeeze off single rounds.

M3A1 Grease Gun

The following additional information is courtesy of Bob Caulkins

"I carried a grease gun in Vietnam while I served with the First Marine Division (66-68). There are a several of neat things about the gun that don't appear in the description and I'd like to tell you about them. The gun had a built-in oiler in the base of the grip. After turning the gun over, the knob seen in the illustration is unscrewed revealing an oil reservoir and an oil applicator. The wire stock was a masterpiece of American ingenuity. It was a wrench for removing the barrel, the barrel had two grooves machined into it into which the wire stock was placed and then turned to loosen the barrel. One of the stock rods was threaded at the forward end to take a bore brush and drilled out to take a cleaning patch, and finally, there was a small "L" shaped piece of steel welded to the butt of the stock, as seen in the illustration, that functioned as a magazine loader. Trying to thumb load 30 rounds into the mag was a chore. This twenty-eight dollar, or so, piece of stamped, welded and machined metal was a beauty, on the several occasions when I needed it, it never failed me. "

Among the different types of submachine guns used by the Chinese Communist forces during the first year of the Korea War was their .45 cal Type 36 copy of the M3A1
The M3A1 is still in use in our armed forces today. Not a bad record for a gun that hasn't been manufactured for over 40 years!

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About Vietnam Protesters

A SOLDIER DIED TODAY

He was getting old and paunchy and his hair was falling fast,
And he sat around the Legion, telling stories of the past.
Of a war that he had fought in and the deeds that he had done,
In his exploits with his buddies; they were heroes, every one.

And tho' sometimes, to his neighbors, his tales became a joke,
All his Legion buddies listened, for they knew whereof he spoke.
But we'll hear his tales no longer for old Bill has passed away,
And the world's a little poorer, for a soldier died today.

He will not be mourned by many, just his children and his wife,
For he lived an ordinary and quite uneventful life.
Held a job and raised a family, quietly going his own way,
And the world won't note his passing, though a soldier died today.

When politicians leave this earth, their bodies lie in state,
While thousands note their passing and proclaim that they were great.
Papers tell their whole life stories, from the time that they were young,
But the passing of a soldier goes unnoticed and unsung.

Is the greatest contribution to the welfare of our land
A guy who breaks his promises and cons his fellow man?
Or the ordinary fellow who, in times of war and strife,
Goes off to serve his Country and offers up his life?

A politician's stipend and the style in which he lives
Are sometimes disproportionate to the service that he gives.
While the ordinary soldier, who offered up his all,
Is paid off with a medal and perhaps, a pension small.

It's so easy to forget them for it was so long ago,
That the old Bills of our Country went to battle, but we know
It was not the politicians, with their compromise and ploys,
Who won for us the freedom that our Country now enjoys.

Should you find yourself in danger, with your enemies at hand,
Would you want a politician with his ever-shifting stand?
Or would you prefer a soldier, who has sworn to defend
His home, his kin and Country and would fight until the end?

He was just a common soldier and his ranks are growing thin,
But his presence should remind us we may need his like again.
For when countries are in conflict, then we find the soldier's part
Is to clean up all the troubles that the politicians start.

If we cannot do him honor while he's here to hear the praise,
Then at least let's give him homage at the ending of his days.
Perhaps just a simple headline in a paper that would say,

Our Country is in mourning, for

A SOLDIER DIED TODAY

© 1987 A. Lawrence Vaincourt



© Kortegaard Engineering ©

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