Tap-Rack-Bang
The standard immediate-action drill for clearing many semi-auto malfunctions.
Also: tap-rack-assess, TRB
Tap-Rack-Bang is the universal first response to a click-instead-of-bang on a semi-auto pistol. TAP the bottom of the magazine to seat it; RACK the slide to chamber a fresh round; attempt to fire (BANG) — or assess (TRB-A) before firing in a defensive context. Most failures to fire are solved by this drill in under a second.