nonfiring

adj, noun — 2 senses

adj

Etymology From non- + firing.

That does not fire.

The level of europium found on the web of the nonfiring hand is significantly different from the levels on the palms and backs of the hand...1970, American Nuclear Society, Nuclear applications and technology, Volume 8:
In relatively short order, he became one of the leading distributors of nonfiring guns in the world.1993 September, “Cease Firing”, in Popular Mechanics, volume 170, number 9:

noun

Etymology From non- + firing.

Absence of firing; failure to fire.

The Firing and Nonfiring of Receptors1958, James Thomas Culbertson, Mathematics and logic for digital devices:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.