hammerless

[ ham-er-lis ]

/ ˈhæm ər lɪs /

(of a firearm) having the hammer concealed within the receiver.

Origin of hammerless

First recorded in 1870–75; hammer + -less

From his coat pocket Britz produced the weapon, a gleaming steel revolver of the hammerless variety.

The Substitute Prisoner |Max Marcin
The time of its construction was before the days of the hammerless.

Camp and Trail |Stewart Edward White
This could be still further improved upon by making it hammerless; that is with an internal hammer.

The Modern Pistol and How to Shoot It |Walter Winans
In 1871 T. Murcott patented a hammerless gun, the first to obtain distinct success.

Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 |Various

A hammerless revolver, a short time ago, would have been considered an unsafe weapon.

The Modern American Pistol and Revolver |A. C. Gould

hammerless

/ (ˈhæməlɪs) /

(of a firearm) having the hammer enclosed so that it is not visible