Challenge coin. Anybody know the unit?

Found this badass challenge coin. Anybody know what unit? Or maybe what I could do with it?

 

You could measure your pecker with it

 

Tried... the coin doesn't go small enough..

 

gap your plugs? flip it? put it on a necklace or keychain? paint it? use it on a subway, tollway or chucky cheese where they take tokens?

 

get a cup of STFU at the PX with it?

 

That's not a challenge coin, its a headspace and timing gauge for a M3 Submachine Gun also known as a grease gun.

 

Damn was I wrong. I was thinking either challenge coin, or maybe spacing gauge for a blank firing adapter on the m320. Thanks!

 

No, no its for an M3. Its disguised as a spark plug gap checker since the grease gun is sometimes used in clandestine operations. Then if your compromised and they find the head space and timing gauge on you they will just think its for checking spark plugs, they threw the "Auto Zone" stamp on there to make it look legit. The CIA is very crafty when it comes to this stuff.

 

I know that unit... 455th auto mech. Vermont national guard.

 

that's true. its also missing any tooth marks on it.

 

If it was a Marine unit I'd have been shocked there wasn't already a crudely drawn dick on the back.

 

drawn in crayon no less. if they could stop themselves from eating them.

 

It would be in permanent marker. We wouldn't waste perfectly good eatin' crayons on drawings.

 

touché.

 

in the words of the wise poet Zoidberg "why not both?"