Geissele Automatics SPR Semi-Auto SSA Large Pin Trigger – AR-15/AR-10

The Geissele SPR (Special Purpose Rifle) SSA Large Pin trigger is a two-stage precision trigger designed for semi-automatic AR-platform rifles requiring .154" (large) trigger and hammer pins. It delivers a clean, consistent break ideal for precision shooting, whether you're working from a prone position or engaging targets at extended range. This trigger is a direct upgrade for shooters seeking match-grade control in a duty-ready package.

Machined from hardened steel with a non-reflective finish, the SSA Large Pin features Geissele's signature two-stage design: a smooth first stage that takes up slack, followed by a crisp second stage break. Total pull weight is approximately 4.5 pounds. Installation requires basic AR armorer knowledge and standard punch set—no permanent modification to the lower receiver. This is a drop-in trigger group, though first-time installers may benefit from referencing installation videos or manuals.

• Part Type: Two-Stage Trigger Group
• Compatible Firearms: AR-15, AR-10, and other AR-pattern rifles with .154" (large) trigger/hammer pin holes
• Material: Hardened Steel
• Finish: Non-Reflective
• Pull Weight: ~4.5 lbs (two-stage)
• Installation: Drop-In (Basic Armorer Skills Recommended)
• Includes: Trigger, Hammer, Disconnector, Springs, Pins