Geissele Automatics

Geissele Super Dynamic Combat SD-C Trigger - AR-15 Flat Bow

Name: Geissele Super Dynamic Combat SD-C Trigger - AR-15 Flat Bow
Brand: Geissele Automatics
SKU: 05-165
Price: 289.0 GBP
Availability: InStock

£289.00

VAT included.

£5 Tracked Delivery · 7–10 Business Days

Estimated delivery: Tue 8 Sep – Fri 11 Sep

Stock is imported from the USA to us, then shipped to you from the UK — we cover all duties and import charges, so there is nothing to pay on delivery.

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Product Overview

The Geissele Super Dynamic Combat (SD-C) is a flat-bow two-stage trigger for AR-15 and M4 pattern rifles, fitting Mil-Spec lower receivers that use .154 in trigger and hammer pins.

The SSA's two-stage pull behind a flat bow — the SD-C changes how the trigger meets your finger, not how it breaks.

The Geissele Super Dynamic Combat (SD-C, 05-165) pairs the proven SSA two-stage pull with Geissele's flat trigger bow. The flat shoe gives a consistent finger position and a mechanical advantage that makes the pull feel lighter and more controlled, while the distinct 90-degree break point sharpens your sense of exactly when the shot will fire.

Underneath, it is all SSA: smooth first-stage take-up, crisp second stage, full-power ignition springs and the safety margin that has made Geissele two-stages a common choice for hard-use rifles. If you have never run a flat bow, the SD-C is a straightforward introduction.

Why shooters choose the SD-C

Flat trigger bow — consistent finger placement, improved leverage
SSA two-stage pull — the proven Geissele architecture
Distinct 90° break geometry — you know precisely when it fires
Full-power ignition springs — dependable primer strikes

What the SD-C fits

Drop-in fit for AR-15/M4 pattern lower receivers with Mil-Spec .154 in trigger and hammer pins, including UK straight-pull AR-15 builds — the heavier, more forgiving two-stage weight suits a rifle used in gloves, in the cold and in the wet. Large-pin receivers are not compatible, so confirm your pin size before ordering. Installation is armourer-level work; run full function and safety checks after fitting.

Specifications

Platform	AR-15 / M4
Fits	Mil-Spec lower receivers with .154 in trigger and hammer pins
Type	Two-stage combat trigger, flat bow
Made in	USA
Brand	Geissele Automatics
MPN	05-165

The two-stage pull, flat-bow edition. Order the SD-C today — in stock at Xtreme Tactical Gun Parts with £5 tracked UK delivery in 7–10 business days.

Explore more: all Rifle Triggers, AR-15 Parts & Accessories or browse all Geissele Automatics.

Compatibility & Fitment

Drop-in fit for AR-15/M4 pattern lower receivers with mil-spec trigger pins. Confirm pin size before ordering.

Please confirm platform, interface and fitment requirements before ordering.

Technical Specifications

Platform	AR-15 / M4
Fits	Mil-Spec lower receivers with .154 in trigger and hammer pins
Type	Two-stage combat trigger, flat bow
Made in	USA
Brand	Geissele Automatics
MPN	05-165
SKU / MPN	05-165
UPC / Barcode	854014005069

Shop Related Categories

Shop AR-15 Parts & Accessories View category

Shop AR-15 Triggers View category

Shop Geissele Automatics View category

Shop Rifle Triggers View category

Related Buying Guides

Not sure which option is right for your build? These guides break it down.

Buying Guide AR-15 Trigger Guide: Single-Stage vs Two-Stage, Pull Weight & Fit

Buying Guide Geissele vs Timney vs TriggerTech vs Radian: Trigger Brands Compared

View all buying guides →

Product Questions

Which receivers will the SD-C fit?

It is a drop-in trigger for AR-15/M4 pattern lowers with mil-spec trigger pins. Large-pin receivers are not compatible, so check your pin holes before ordering. If you are unsure, measure them or contact us with the receiver make and model.

What kind of shooting is the SD-C intended for?

The C stands for combat: it is the two-stage Super Dynamic set up for duty and general-purpose use, with a deliberate first stage and a defined wall rather than the lightest possible break. That makes it forgiving under stress and when wearing gloves. It still gives you the flat bow and the clean second stage that the Super Dynamic line is known for.

Why a flat bow rather than a curved trigger?

A flat shoe keeps the finger at a fixed distance from the pivot no matter where it contacts, so the perceived pull weight stays consistent. Shooters with larger hands or a lower finger placement often prefer it. If you want a lighter feel from the same flat-bow layout, the SD-E is the enhanced version of the same idea.

Do I need extra parts, and how does it sit in the range?

It installs with standard trigger and hammer pins, so no additional hardware is required if yours are in good order. There is one configuration, so there is no variant to choose between. Our Geissele Automatics collection shows how the SD-C sits between the entry-level and fully adjustable models.

What are the postage and returns arrangements?

This trigger ships from the United Kingdom with £5 tracked UK delivery in 7–10 business days, and tracking is emailed once it is on its way. If it does not fit your lower, see our returns policy or contact us and we'll help sort it.