Geissele Automatics

Geissele Super Semi-Automatic Enhanced SSA-E Trigger - AR-15

Name: Geissele Super Semi-Automatic Enhanced SSA-E Trigger - AR-15
Brand: Geissele Automatics
SKU: 05-160
Price: 279.0 GBP
Availability: InStock

£279.00

Tax included where applicable.

In stock7–10 day delivery

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Delivery Information

Orders are dispatched from the United Kingdom with tracked delivery. You will receive tracking details by email once your order ships.

Returns & Refunds

Please see our Returns & Refunds policy for full details on returns and exchanges.

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SKU: 05-160UPC: 854014005038

Product Overview

The Geissele SSA-E is an enhanced 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 trigger refined for precision — the SSA-E lightens the break for shooters who split hairs at distance.

The Geissele Super Semi-Automatic Enhanced (SSA-E, 05-160) takes the SSA architecture and reworks the geometry for a lighter, cleaner second stage — a break Geissele's own shooters describe as a glass rod snapping. The result is a two-stage trigger that keeps the SSA's safety margin while rewarding deliberate precision work: target rifles, long-range builds and any AR-15 asked to hit small things a long way off.

Like every Geissele, the SSA-E is machined and finished to tolerances that keep the pull consistent for the life of the rifle, ships non-adjustable with nothing to drift, and runs full-power springs for dependable ignition.

Why shooters choose the SSA-E

Enhanced lighter second stage — a very crisp, clean break
Two-stage discipline — prep the take-up, commit with precision
Full-power ignition springs — dependable primer strikes
Non-adjustable consistency — the same pull, round after round

What the SSA-E fits

Drop-in fit for AR-15/M4 pattern lower receivers with Mil-Spec .154 in trigger and hammer pins. That includes UK straight-pull AR-15 builds, and the SSA-E is one of the more sensible choices for one: a straight pull is shot deliberately and at distance, which is exactly what the lighter enhanced second stage is for. Large-pin receivers are not compatible — confirm your pin size before ordering. Installation is armourer-level work; complete function and safety checks before live fire.

Specifications

Platform	AR-15 / M4
Fits	Mil-Spec lower receivers with .154 in trigger and hammer pins
Type	Two-stage enhanced trigger
Made in	USA
Brand	Geissele Automatics
MPN	05-160

Precision that keeps its nerve. Order the SSA-E today — in stock at Xtreme Tactical Gun Parts with free tracked UK delivery in 7–10 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

SKU / MPN	05-160
UPC / Barcode	854014005038
Brand	Geissele Automatics

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

Will the SSA-E fit my lower receiver?

It is a drop-in two-stage for AR-15/M4 pattern lowers using mil-spec trigger pins. Non-standard or large-pin receivers will not accept it, so confirm your pin size before you order. If the lower is an unfamiliar brand, get in touch with the details and we'll check for you.

What does the Enhanced part of SSA-E mean in practice?

The SSA-E is the lightened, refined version of the SSA: the break is light and exceptionally crisp, aimed at precision and marksmanship rather than hard-use duty work. You still get a distinct two-stage feel, with a take-up stage before a defined wall. It is one of the most popular choices for a DMR or accuracy-focused AR build.

Should I choose the SSA-E or the standard SSA?

Go for the SSA if the rifle is a working carbine and you want the heavier, more forgiving pull; go for the SSA-E if you want the lighter, crisper break for deliberate shooting. Both share the same two-stage architecture and curved-style bow. Neither is adjustable, so the weight you buy is the weight you get.

Is anything else required to install it?

No, it uses your existing standard trigger and hammer pins provided they are serviceable, and there are no shims or springs to fit. Function-check the rifle thoroughly after installation, including safety operation, before live firing. If you would like background on two-stage triggers first, see our AR-15 trigger guide.

How will it be sent, and what if it is wrong?

We dispatch from the United Kingdom with free tracked UK delivery in 7–10 days and email you tracking at despatch. If the trigger turns out to be the wrong fit for your rifle, see our returns policy or contact us and we'll help sort it.