Geissele Super Dynamic 3 Gun (SD-3G) Trigger 05-166

Geissele Super Dynamic 3 Gun (SD-3G) Trigger 05-166 takes your competition rifle to the next level of performance. It's compatible with most mil-spec small-pin lowers on AR15 and AR10 platforms.

This SD 3G trigger has an ultra-short pull length and reset, built for incredibly fast follow-up shots. Technically it's a single-stage trigger, but it's really more of a hybrid — it gives the safety margin of a two-stage combat trigger with the pull feel of a single stage. Total pull weight runs 3.0-4.0 lbs with the included lighter spring, or 4.5-5.5 lbs with the heavier one, so shooters can dial in their preferred feel.

This Geissele SD-3G is purpose-built for close-course 3-Gun competition specifically. Geissele doesn't recommend it for duty use, bench rest, or precision accuracy work — the short reset that makes it fast for competition isn't the right tool for shooting small groups. It's also not compatible with Sig MPX/MCX platforms or PCC AR15/M4 variants.

Key Features:

• Hybrid rolling break, technically single-stage
• Total pull weight: 3.0-4.0 lbs (light spring) or 4.5-5.5 lbs (heavy spring)
• Includes both light and heavy springs
• Flat trigger bow, M1911-style
• Mil-spec small pin size
• Compatible with AR15/AR10 platforms
• Not recommended for duty, bench rest, or precision accuracy work
• Not compatible with Sig MPX/MCX or PCC variants

Everything about this Geissele SD3G trigger is built to help you dominate 3-Gun competition, not double as a do-everything trigger.