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In addition to classic DA/SA trigger (V3) variants, Heckler and Koch features a proprietary Combat Defensive Action (CDA) or Law Enforcement Modification (LEM) in their P30 line, which is a variant of conventional Double Action Only (DAO) triggers.
It was the first U.S. designed double action (DA) semi-automatic pistol and was designed to replace the venerable M1911A1. The 1911 was still extremely popular with law enforcement, military, and civilian use, but only offered a single-action trigger and a heavy steel frame. [1]
The CDA aka LEM trigger is a dual-stage trigger that always fires from a hammer down DA mode, but has an internal mechanism that is cocked with each cycle of the action. It provides a cocked double-action trigger pull of 20 N (4.5 lb f ) (+4/-2 N) and an uncocked double-action trigger pull of 51 N (11.5 lb f ) (±5 N).
The trigger comes from the factory with a 24 newtons (5.5 lbf) single-action pull, and is capable of both single-action and double-action. Pulling back the slide sets the hammer backwards and downwards to its single-action position, making for a very short trigger pull, with minimal take-up. The double-action pull is longer and more stiff.
The VP9 trigger has a short, light take-up with a solid, single action type break followed by a short positive reset. The average weight of the stock trigger pull is 5.2 lb f (23 N). The VP9 trigger has a consistent pre-travel pull followed by a positive set with clean break. Disassembly does not involve releasing the striker by squeezing the ...
Single-action: Usually referring to a pistol or revolver, single-action is when the hammer is pulled back manually by the shooter (cocking it), after which the trigger is operated to fire the shot. See also double-action. Single-shot: A firearm that holds only a single round of ammunition and must be reloaded after each shot.
The law provides scant guidance on who exactly is supposed to pursue criminal penalties across Kentucky’s 120 counties or what steps law enforcement agencies can take to learn who is getting an ...
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.