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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.
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
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 ...
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 ...
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 ...
The Ruger P series is a line of centerfire semi-automatic pistols made by Sturm, ... the trigger is disconnected from the sear, and the hammer is decocked. The ...
In order to create a lighter trigger pull, it features a friction-reducing cam. The LCR was originally released chambered in .38 Special. In June 2010, Ruger released the LCR-357 chambered for .357 Magnum. [7] With the rising popularity of the LCR, in December 2011 Ruger announced the new Ruger LCR 22, chambered in .22 LR with an eight-round ...