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Many original single-action revolvers have a half-cock "safety" notch on the hammer, but these are not drop-proof. [22] Modern single-action revolvers, those made after the early 1970s, almost always have an internal safety, such as a hammer block or transfer bar. It is safe to carry such firearms with a loaded chamber under the hammer.
The hammer itself is a metal piece that forcefully rotates about a pivot point. [2] The term tumbler can refer to a part of the hammer or a part mechanically attached to the pivot-point of the hammer, depending on the particular firearm under discussion (see half-cock). According to one source the term tumbler is synonymous with hammer. [3] [4]
Colt Single Action Army hammer at half cock. Half-cock is when the position of the hammer of a firearm is partially—but not completely—cocked. Many firearms, particularly older firearms, had a notch cut into the hammer allowing half-cock, as this position would neither allow the gun to fire nor permit the hammer-mounted firing pin to rest on a live percussion cap or cartridge.
Thus, most DA/SA guns either feature a conventional safety that prevents the hammer from accidentally dropping, or a "decocker" – a lever that safely and gently drops the hammer (i.e. decocks the gun) without fear of the gun firing. The latter is the more popular because, without a decocker, the user is forced to lower the hammer by hand onto ...
The major components, such as the barrel, bolt, hammer, operating rod, safety, and trigger housing were stamped with a numeric drawing number and the manufacturer's initials. Harrington & Richardson rifles are marked HRA on all marked parts except the receivers, which were stamped H&R ARMS CO .
The Smith & Wesson Safety Hammerless or Smith & Wesson New Departure (nicknamed by collectors as the Lemon Squeezer) is a double-action revolver that was produced from 1887 to 1940 by Smith & Wesson. Based on the Smith & Wesson Model 2 double-action design, the revolver incorporated an internal hammer and an external grip safety on its back-strap.