The Geissele SSA two-stage trigger is the semi-automatic version of the select-fire trigger Geissele developed for U.S. Special Operations, built here with a curved bow for AR-pattern rifles (Geissele part no. 05101). Its two-stage pull is light enough for accurate, precise shots yet forgiving enough for close-quarters work. Total pull weight is a non-adjustable 4.5 pounds nominal, and the parts are EDM wire cut from heavy-duty tool steel with a durable black finish. The trigger uses standard .154-inch mil-spec trigger and hammer pins, so it fits any mil-spec stripped lower receiver on 5.56/.223 AR-15 rifles and .308 AR-10 pattern rifles. Because it is non-adjustable, the pull you install is the pull you keep, which suits duty, defensive and general-purpose rifles.

Key Specifications

• The trigger type is two-stage, with take-up before the break for controlled, precise shots.
• The bow is curved, the traditional AR trigger shape.
• Total pull weight is a nominal 4.5 pounds, a weight suited to duty and defensive rifles.
• The pull is non-adjustable, so there are no adjustment screws to set or check.
• It uses .154-inch mil-spec trigger and hammer pins, the standard small-pin size.
• It fits mil-spec stripped lower receivers without special pins.
• Compatibility covers 5.56/.223 AR-15 and .308 AR-10 pattern rifles.
• Parts are EDM wire cut from heavy-duty tool steel for precise, durable parts.
• The finish is black, a durable coating over the tool steel parts.
• Operation is semi-automatic only, derived from Geissele’s Super Select-Fire design.

Frequently Asked Questions

Can the pull weight be adjusted? No. The SSA is a non-adjustable two-stage trigger with a nominal total pull weight of 4.5 pounds.

Will it fit my lower receiver? It uses standard .154-inch mil-spec trigger and hammer pins, so it fits mil-spec stripped lower receivers on 5.56/.223 AR-15 rifles and .308 AR-10 pattern rifles.

Is it a single-stage or two-stage trigger? Two-stage. The first stage takes up slack and the second stage breaks the shot, a design Geissele carried over from its select-fire trigger.

Buy the Geissele SSA Two-Stage AR-15 Trigger, Curved Bow, 4.5 lb

The SSA trades a single-stage mil-spec pull for a two-stage pull at a duty-friendly weight, with nothing to adjust. Order it with our other AR triggers from our Lubbock, Texas gun shop for fast, direct shipping.