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When choosing a single-stage trigger, keep in mind that different models vary in terms of pull weight, reset distance, amount of pre-travel, and other performance characteristics. Two-Stage AR Triggers A two-stage trigger is a trigger system where two distinct levels of resistance are required in order to release the hammer.. The Geissele Automatics Super Semi-Automatic AR-15 Enhanced Trigger is a non-adjustable, two-stage trigger that provides improved trigger control and accuracy while reducing the first and second-stage pull weights. These finely-tuned Rifle Triggers by Geissele a Standard Mil-Spec pin and are made from quality tool steel. The Geissele Super Semi-Automatic Enhanced Precision Trigger is easy to.

Parts of an AR-15 Geissele Trigger. If you're new to the world of firearms and triggers, here's a breakdown of the key parts of a trigger: Trigger: The lever that you squeeze to activate the gun's firing mechanism and fire a round. Hammer: The piece that experiences spring tension and remains in place until the trigger moves enough to release the hammer.. The SSA-E™ with it's reduced first and second stage pull weights result in a trigger with a smooth, light first stage take-up and a crisp, candy cane-like second stage break. The SSA-E™ is ideal for use in precision Squad Designated Marksman type rifles where weapon accuracy and reliability are critical and a non-adjustable drop in trigger.