There is only 1 fact
Depends on which black caps you are refering to. The question is far to general for a proper answer. Which country, which military unit, basic description - any of these would help.
black caps or
The Black Caps
Burberry caps are available in black, pink, blue, red and plaid. You can purchase Burberry caps from various retailers such as Wholesale Start and Amazon.
no, only caps for percussions pistols and caps for percussion rifles. gun stores know the difference.
Under to black rubber caps on the very top of the engine. Remove the black caps and the plugs are reset about 4 inches down.
the average precipitation is 10 inches or 250 millimeters a year. ;D