Double-Set Triggers

DST or Double-Set Triggers -  On a rifle, a complete secondary, miniature action, which when cocked by pulling the rear trigger transforms the front trigger to a hair trigger. When the front trigger is pulled, a spring powers a miniature hammer, multiplying the force of the actual trigger pull, allowing a very light touch to accomplish the release of the main sear.  While the front trigger is always at the ready (requiring a ~4 pound pull), if one has the time, using the set trigger feature may allow for a more accurate long-distance shot because now thr trigger requires only a ~4 ounce pull. To use this feature, the rear trigger must be pulled consciously just prior to taking the shot. It would be dangerous to walk with a loaded rifle having such a sensitive trigger as standard. A Double-Set trigger is normally recognizable by the small setscrew used to adjust the weight of pull required.

A Double-Set Trigger mechanism in the normal, relaxed position.

A Double-Set Trigger mechanism in the cocked position---the front trigger converted to a hair trigger. Note the tiny sear, engaged, above the front trigger.

A Double-Set Trigger operates using its own miniature firing mechanism (sear, spring and hammer) when cocked, to multiply the force of a pull on the main trigger. A pull of a few ounces then accomplishes the work that normally requires a pull of several pounds. A small setscrew located just in front of the set trigger adjusts the weight of pull of the main trigger.

The Hallowell & Co. Illustrated Firearms Dictionary is for informational purposes only. We do not necessarily offer the items described above for sale. Please click on any of the links below to see what we actually do have available for purchase.

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