hammerless
Adjective
Meaning
Without a hammer.
Not requiring the use of a hammer.
hammerless nails
(firearms) Without a visible hammer; said of a gun having a cock or striker concealed from sight, and out of the way of an accidental touch.
Source: en.wiktionary.orgExamples
By the 1860s hammerless guns were increasingly used in Europe both in war and sport although hammer guns were still very much in the majority.
However, the most successful hammerless innovation of the 1870s was Anson and Deeley's boxlock patent of 1875.
Swiss gunsmith Friedrich Martini devised an action that resembled the Peabody but incorporated a hammerless striker cocked by the operating lever with the same motion that pivoted the block.
Daniel Myron LeFever is credited with the invention of the American hammerless shotgun.
The most widely used British hammerless needle-fire shotgun was the unusual hinged-chamber fixed-barrel breech-loader by Joseph Needham, produced from the 1850s.
Hammerless shotguns The origins of the hammerless shotgun are European but otherwise obscure.