Geissele Automatics Triggers -
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Geissele Automatics Triggers


Geissele triggers and hammers are made from quality S7 tool steel. The sear surfaces are precisely cut by a wire EDM machine. The non-directional surface finish of this machine enables a smooth trigger pull without the associated grittiness of directional machining marks normally left by a milling machine. The initial force needed to start the disengagement of the sear surfaces is low, and the force linearly increases at a low rate. This helps the hammer to fall at the desired point of aim and builds shooter confidence in the weapon’s ability to place rounds on the point of aim. A full force hammer spring is used for quick lock-time and positive ignition of all ammunition types. No lightened hammer spring is used. The hammer itself is lighter than a standard AR15 hammer, further decreasing lock-time and increasing accuracy of the weapon. The net effect is a greater accuracy and precision while shooting on the move, shooting with the weapon in movement, and during increased cadences of fire.


The number of parts to a Geissele non-adjustable trigger is identical to a mil-spec trigger. There are no adjustment screws to come loose. All springs are captive; they will not get lost during disassembly in the field. The entire trigger can be disassembled for cleaning (no rivets or staked parts).The trigger can be installed without removing the safety. Sear engagement is preset from the factory. Hammer and trigger pins are a close slip fit into nominal receiver holes so the trigger can be installed and removed with rudimentary tools. Triggers come with a slave pin for the trigger/disconnector assembly for easy installation.


The two-stage trigger has a generous overlap of the sear surfaces which contributes to safety and a low tendency of any inadvertent movement of the trigger to discharge the weapon. Geissele’s non-adjustable triggers offer a patented pseudo-sear that is almost identical to the standard AR-15 single stage sear. However, this secondary sear has surfaces that never touch during normal operation. This prevents the hammer from falling unless the trigger is pulled. The secondary safety sear contributes to shooter confidence in dynamic/vehicle situations where a fellow shooter’s muzzle may cover him. There is firm knowledge that even with the safety in the fire position the weapon can never discharge unless the trigger is pulled. The trigger is designed to operate in dusty and abrasive environments.

All Geissele Automatics Triggers

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