Geissele Super MCX SSA Trigger

The Geissele Super MCX SSA is the MCX-specific version of Geissele's CRANE-certified Super Semi-Automatic trigger, redesigned with hardened components to handle the higher bolt-carrier velocities of the MCX gas-piston system. Geissele is explicit on this point: standard AR-pattern Geissele triggers (SSA, SSA-E, SSA-X) are NOT warrantied for use in the MCX because the piston bolt-carrier velocity will, over time, damage the AR disconnector and hammer geometry. The Super MCX SSA addresses this with thicker disconnector and hammer engagement surfaces tuned for the MCX cycling profile.

The trigger is a two-stage design with an approximately 4.5 lb total pull weight, non-adjustable, with the same combat-inspired feel as the original SSA used by USSOCOM and CRANE-approved units. First-stage take-up is light and predictable; the second stage breaks crisp and clean. Reset is short and tactile. The Super MCX SSA is the right pick for shooters who want a duty-grade trigger upgrade on a Spear LT, Virtus, or Rattler and care about Geissele's warranty backing the install.

Available in two trigger-bow options: the original M4 curved bow that mirrors the factory MCX feel, and the Super Dynamic flat bow that shortens reach by approximately 0.1 inch and feels more positive under a high grip. Both ship at the same price. Drop-in install with the standard 0.154" small-pin spec used on all current MCX variants.