Definition
A pneumatic rivet gun that delivers a single, powerful blow each time the trigger is pressed, used to drive solid rivets in one strike rather than through a rapid series of hammer blows.
Plain English
A rivet gun that hits the rivet once -- hard -- with each pull of the trigger, instead of buzzing away with many quick taps.
Context Anchor
Seen in aircraft sheet-metal maintenance, especially when solid rivets are being installed in skins, panels, or structural repairs.
Derivation
Called 'one-shot' because each trigger pull produces exactly one hammer blow. This contrasts with the more common 'fast-hitting' rivet gun, which delivers a stream of rapid blows while the trigger is held down.
Why Pilots Care
Pilots who own or maintain their own aircraft -- especially homebuilders and owners of riveted airframes -- need to recognise the right tool for the rivet size and structure being worked. Using the wrong type of gun can damage the rivet, the skin, or the underlying structure.
Analogy
It is like using one firm, controlled hammer strike instead of tapping several times in a row.
Intuition Check
“One-shot” does not mean the tool is disposable or used only once. It means the gun gives one blow each time the trigger is pressed.
Example Sentence 1
The mechanic chose a one-shot rivet gun for the large structural rivets on the wing spar.
Example Sentence 2
Because it completes the rivet in one cycle, the one-shot rivet gun speeds up wing spar repairs without needing a bucking bar.