Geissele Automatics 05166 Sd 3 Gun Flat Trigger With 4.50-5.50 Lbs Draw Weight & Black Oxide Finish For Ar-15/ar-10

Geissele SD 3 Gun Flat Trigger – Model 05166

Engineered for speed, precision, and reliability, the Geissele Super Dynamic 3-Gun (SD-3G) Trigger is the ultimate upgrade for competitive shooters and tactical enthusiasts. Designed specifically for AR-15 and AR-10 rifles, this flat-faced trigger delivers a lightning-fast single-stage pull with a crisp break and ultra-short reset—ideal for rapid target transitions and split-second follow-up shots.

With a pull weight between 4.5 to 5.5 lbs, the SD-3G offers a hybrid feel that blends the responsiveness of a single-stage trigger with the control of a two-stage system. Its black oxide finish ensures corrosion resistance and smooth operation, while the mil-spec pin size guarantees easy drop-in installation.

Key Features:

• Trigger Type: Single-stage, competition-grade
• Pull Weight: 4.5–5.5 lbs (non-adjustable)
• Trigger Shape: Tactical flat face for enhanced control
• Finish: Black oxide for durability and smoothness
• Material: Precision-machined steel
• Compatibility: AR-15 & AR-10 platforms (mil-spec)
• Installation: Drop-in, no gunsmithing required
• Ambidextrous Use: Designed for right- and left-handed shooters