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Sear shown in a revolver action. In a firearm, the sear is the part of the trigger mechanism that holds the hammer, striker, or bolt back until the correct amount of pressure has been applied to the trigger, at which point the hammer, striker, or bolt is released to discharge the weapon.
A Crosman air pistol trigger mechanism, unmodified (top) and with a sear engagement adjustment (bottom). An adjustable trigger may have ways to adjust all of these stages, plus trigger location. For example, a first stage or takeup adjustment might include weight and travel, a second stage or sear engagement adjustment might include weight and ...
The trigger pull can be divided into three mechanical stages: Takeup or pretravel: The movement of the trigger before the sear moves. Break: The movement of the trigger during the sear's movement up to the point of release, where the felt resistance suddenly decreases. Overtravel: The movement of the trigger after the sear has already released
Although Colt's 80 series developed a trigger operated firing pin block safety, and Kimber and Smith & Wesson use a Swartz firing-pin safety, which is operated by the grip safety; the Ruger SR1911 pistol features a titanium firing pin and heavy firing pin spring, which negates the need for a firing pin block, offering an updated safety feature ...
A trigger disconnector captures the hammer in the cocked position after a shot has been fired, even if the trigger is held to the rear as the gun cycles. This ensures the gun can only fire in the semi-automatic mode, as the trigger needs to be released to 'reset' and have the disconnector release the hammer back to the trigger sear.
The Ruger P91 is essentially a Ruger P89 chambered in .40 Smith & Wesson. Like its precursors, it also had an investment cast aluminum alloy frame. It was only produced for two years, from 1992 to 1994. It has a magazine capacity of 11 rounds, with 10 round magazines being developed for the 1994 ban. KP94DC, decock-only model
The Ruger American Rifle is the first to use the trademarked "Ruger Marksman Adjustable™" trigger, which is similar in design to the Savage "AccuTrigger" and allows the user to adjust the weight of pull between 3–5 lb (1.4–2.3 kg) by means of turning a set screw on the trigger housing. [2]
To simplify the design and cut the number of parts, the Redhawk used a single coil spring to power both hammer and trigger, resulting in a slightly heavier trigger pull in single action mode. [5] Because of the single power spring, Redhawk revolvers typically show little disparity between single and double-action pull weights - often three ...