This temporary increased trigger pull is intended to prevent negligent discharges. However, if a user shooting under stress short-strokes the trigger by only releasing it halfway, the trigger will reset, but with a 38 N (8.5 lb f) pull. DAK triggers have a long stroke with 29 N (6.5 lb f) pull. Double Action Kellerman (DAK): A variant of traditional double-action used on certain SIG Sauer semi-automatic pistols.There is no single-action function and the hammer will return to its decocked position after each shot.
For the system in steam and internal combustion engines, see Double-acting cylinder.ĭouble action (or double-action) refers to one of two systems in firearms where the trigger both cocks and releases the hammer.
