Lock, Stock and barrel
 

The old saying the "Whole Lock, Stock and barrel" refers to a flintlock musket.

Re: Lock, Stock and barrel
 

yes , yes it does ...

Re: Lock, Stock and barrel
 

So does, Flash in the pan.

Re: Lock, Stock and barrel
 

More interesting word origins traced to weapons:

The Bayonet is one of the few weapons named after its place of origin: Bayonne, France. The Colt Paterson would be another.

Lt. Henry Shrapnel began experimenting with a hollow projectile containing a number of balls and a powder charge. The British first fired shrapnel against an enemy in 1804 in Dutch Guiana.

In World War I, the Germans used a massive cannon to bombard Paris from long range. They named it, "Big Bertha," in honor of Frau Bertha Krupp, head of the Krupp steel works.