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Geissele Super Dynamic 3-Gun (SD-3G) Trigger Trigger Geissele Automatics
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Geissele Super Dynamic 3-Gun (SD-3G) Trigger

£299.99
Payment methods
  • PayPal

Reliable shipping

Flexible returns

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

Features

  • Hybrid Single-/Two-Stage Pull – Shortened pull length with a crisp two-stage take-up and a single-stage break, plus a lightning-quick reset to speed follow-up shots.
  • Interchangeable Spring Options – Includes two spring kits: Light (3 – 4 lb pull) and Heavy (4.5 – 5.5 lb pull), so you can tailor the trigger weight to your preference.
  • Flat Trigger Bow – Wide, flat bow increases leverage and offers positive tactile feedback under all conditions.
  • Cut & Polished Internals – Enhanced sear geometry and smooth surfaces provide consistent engagement and release.
  • Rugged Construction – CNC-machined 7075-T6 aluminum housing with 8620 steel trigger bow and internals; finished in matte-black Type III hard-coat anodize for corrosion and wear resistance.
  • Mil-Spec Compatibility – Drop-in design fits any mil-spec AR-15/.223/5.56 or AR-10 lower receiver using standard .154″ pins.

Technical Specifications for Geissele Super Dynamic 3-Gun (SD-3G) Trigger

Specification

Details

Manufacturer

Geissele Automatics

Model / Part Number

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

SKU / MPN

05-166-Geissele / 05-166

UPC

854014005076

Trigger Style

Hybrid Single-/Two-Stage

Bow Type

Flat

Pin Size

Mil-Spec .154″

Pull Weight (Light Spring)

3.0 – 4.0 lb

Pull Weight (Heavy Spring)

4.5 – 5.5 lb

Spring Options

Light & Heavy (included)

Adjustment

None (non-adjustable)

Material

7075-T6 aluminum (housing); 8620 steel (bow/internals)

Finish

Type III hard-coat anodize (black)

Weight

3.2 oz (≈ 91 g)

Compatibility

Mil-Spec AR-15/.223/5.56 & AR-10 lowers

Installation

Drop-in (standard trigger pins)

Warranty

Geissele lifetime warranty

Included Accessories

  • Light and Heavy spring sets
  • Installation hardware & manual

SEO Keywords
Geissele SD-3G Trigger, Super Dynamic 3-Gun, 05-166, hybrid trigger pull, interchangeable springs, AR-15 match trigger.

Frequently asked questions

What is the return policy?

Our goal is for every customer to be totally satisfied with their purchase. If this isn’t the case, let us know and we’ll do our best to work with you to make it right. 14 day return if you are not happy. Things must be unopened and in original packaging, unless it is faulty.

Are any purchases final sale?

No, you can cancel at anytime and will receive a full refund. We will always work with you. Email: info@xtremetactical.co.uk

When will I get my order?

Shipping & Delivery

  • We work quickly to process and ship your order as soon as possible.
  • Once your order has shipped, you’ll receive an email with full tracking details.

Delivery Times

  • Standard delivery from our USA suppliers: 7–10 working days (usually within a week)
  • UK Stock Collection items ship within 24 hours.

Stock & Sourcing

  • Due to limited demand, we do not hold inventory in the UK. All products ship direct from our USA suppliers to us then we ship to you so you don’t pay any imports fees.

Insurance & Guarantees

  • Orders over £300: Free Royal Mail Special Delivery (Guaranteed Next Day, Fully Insured)
  • Orders under £300: Royal Mail Tracked service for £3.99
Where are your products manufactured?

Our products are manufactured both in USA and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.

How much does shipping cost?

Shipping & Insurance

Orders over £300 ship free via Royal Mail Special Delivery, guaranteed next day and fully insured.

Orders under £300 ship via Royal Mail Tracked for a flat fee of £3.99.

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