| 摘要 |
A device comprises of independent trigger bow (58) supplied with overlapping recess (64) and a trigger block (10) having a bow guide recess (20), pivot hole (14) with axis pin (34A), primary lever (28) having a axis hole (30) at one end and a bow extender recess (32) and a trigger plate (36A) having a pre-load bar (56) and stopper bar (54) that can be assembled into a module to allow easy installation on trigger tunnel (85) of firearm(88) for reduce firearm trigger pull weight without altering firearm (88). Block (10) is being equipped with catches (12) extending sideways and adjacent with bow guide recess (20) which will overlap with recess (64) of bow (58) to allow both the bow (58) and block (10) to occupy in one same area which allow anchoring against a bow tunnel (83) end wall and supplied with magazine cut (15) disposed on the upper left of block (10) to allow for a magazine passage. As trigger plate (36A) is depressed with finger within a given point on trigger plate (36A) upon firing the finger force will be shifted directly into the adjustable preload bar (56) and synchronizes into the outermost lever end at point (27) of lever (28) producing a high torque leverage which reduces firearm trigger pull weight or load force from the trigger bow (58) energized from sear (70), hammer (72) and hammer spring (82). The trigger plate (36A) being retained with pivot pin (34A) through retaining slot (40A) is supplied with plate bearing (42) and bottom bearing (48) will slide against a frame upper bearing (79) and against s block plate bearing (17) of block (10) respectively, will function as an advancing global pivot point which will changed a rotational action of lever (28) into a linear straight pull action to maintain firearm standard straight action and reducing the trigger pull weight.
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