Geissele Automatics, SD-3G Super Dynamic 3-Gun Trigger, AR-15

SUPER DYNAMIC 3 GUN (SD-3G) TRIGGER

Overview

The Geissele Automatics SD-3G (Super Dynamic 3-Gun) Trigger is engineered for competitive shooters who demand lightning-fast performance. Designed with Geissele’s flat-faced Super Dynamic Bow, the SD-3G combines the feel of a single-stage trigger with the control of a hybrid two-stage design. Its ultra-short reset and smooth, crisp break make it a favorite for 3-Gun competitors and shooters who value speed above all else.

Key Features

• Hybrid Design: Feels like a single-stage with short take-up and fast break.

• Super Dynamic Flat Bow®: Flat trigger shoe improves finger placement and trigger control.

• Lightning-Fast Reset: Optimized for competition and rapid follow-up shots.

• Durable Construction: Precision-machined tool steel, heat-treated for reliability.

• Drop-In Fit: Works with AR-15 small-pin (.154”) receivers.

Why Choose the SD-3G Trigger?

1. Speed for Competition

The SD-3G excels in high-speed environments. With an extremely short reset and flat bow design, it allows for near-instant follow-up shots, making it a proven choice in 3-Gun competitions.

2. Best Use-Case Applications

• 3-Gun / Competition: Designed specifically for speed and transitions.

• Recreational Shooting: Great for shooters who enjoy rapid, smooth fire.

• Tactical Training: Offers faster split times but still maintains Geissele reliability.

(For precision builds, the SSA-E or SSP may be better suited. For duty use, Geissele recommends the SSA or SSA-X.)

3. Comparison with Other Geissele Triggers

• SD-3G vs S3G: Identical mechanically, but SD-3G has a flat bow while the S3G uses a curved bow.

• SD-3G vs SSA-E: SD-3G prioritizes speed with ultra-short reset, while SSA-E emphasizes precision with a lighter two-stage pull.

• SD-3G vs SSP: Both are fast, but SSP is a true single-stage; SD-3G is a hybrid with competition tuning.

4. Fitment & Compatibility

• Fits AR-15 rifles with small-pin (.154”) receivers.

• May be used in some AR-10/.308 platforms (check manufacturer specs).

5. Common Questions / Troubleshooting

• Will the geissele automatics SD-3G Trigger double fire? → No, but its short reset can mimic rapid fire if finger discipline is poor.

• Is it adjustable? → No, it’s tuned for optimal competition performance.

• Is it safe for defensive use? → While reliable, Geissele recommends other triggers (SSA, SSA-X) for duty or defensive builds.

Technical Specs

Why the SD-3G Trigger is One of Geissele’s Most Popular Competition Triggers

The SD-3G Super Dynamic 3-Gun Trigger</strong> is one of the most searched Geissele models online because it offers a unique blend of speed, control, and competition performance. Its flat bow design, crisp break, and ultra-fast reset make it a go-to for shooters who want the fastest splits possible without sacrificing reliability.

Conclusion

The Geissele Automatics SD-3G Trigger with Super Dynamic Flat Bow is the ultimate choice for competition shooters who demand speed and performance from their AR-15. With its crisp break, flat trigger face, and lightning-fast reset, the trigger delivers the competitive edge you need on the range.