Gun Parts | Lower Receiver Parts & Trigger KitsGeissele AutomaticSold by Sportsmans Guide

Geissele Automatic

Geissele SSA-E Super Semi-Automatic Enhanced AR-15/AR-10 Trigger

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Precision-made Usa

For AR-15 and AR-10 platforms

Semi-automatic-only, Finely

Tuned version of Geissele's 2-stage

Reduced First-

Second-stage pull weights for a

Crisp Second-stage

A 2.9-3.8 lb total pull

Drop-in Installation

For mil-spec AR-15 and most

$259.99
View on Sportsmans Guide

You'll be taken to Sportsmans Guide to complete your purchase.

Hunter's Outpost earns a commission from affiliate links at no extra cost to you.

SKU: WX2*0721077

Overview

Built for shooters who want a refined trigger feel without giving up a duty-oriented setup, this semi-automatic, 2-stage trigger is aimed at precision AR use where consistency matters. Its reduced pull weights are described as providing a smooth first stage and a crisp second-stage break, making it well suited to Squad Designated Marksman-style rifles and other accuracy-focused builds. The non-adjustable design keeps the setup straightforward, and the drop-in installation is intended for mil-spec AR-15 lowers and most AR-10 lowers.

Why Hunters Choose the Geissele Automatic

Semi-automatic-only, 2-stage

Trigger design for AR-15 and

Reduced First-

Second-stage pull weights for a

Smooth, Light

A crisp second-stage break

Non-adjustable Design

Simplicity is required

Drop-in Installation

For mil-spec AR-15 and most

Key Features

  • Precision-made in the USA for AR-15 and AR-10 platforms.
  • Semi-automatic-only, finely tuned version of Geissele's 2-stage combat trigger.
  • Reduced first- and second-stage pull weights for a smooth, light take-up.
  • Crisp second-stage break with a 2.9-3.8 lb total pull weight.
  • Drop-in installation for mil-spec AR-15 and most AR-10 lowers.
  • M4 curved trigger bow with trigger and hammer made from S7 tool steel.

Best Used For

  • Precision-oriented AR-15 or AR-10 builds where a light, two-stage trigger is preferred
  • Squad Designated Marksman-style rifles needing a non-adjustable trigger setup
  • Hunters who want a crisp second-stage break for controlled shot placement
  • Shooters using mil-spec lowers seeking a drop-in trigger installation
  • Users wanting a semi-automatic-only trigger with a smooth first-stage take-up

Specifications

Action TypeSemi-automatic only
AdjustableNo
CompatibilityFits mil-spec AR-15 and most AR-10 lowers
Country Of OriginUSA
Hammer MaterialS7 tool steel
InstallationDrop-in installation
Stage Count2-stage
Total Pull Weight2.9-3.8 lbs
Trigger BowM4 curved
Trigger MaterialS7 tool steel

Pros

  • Semi-automatic-only, 2-stage trigger design for AR-15 and most AR-10 lowers
  • Reduced first- and second-stage pull weights for a smoother trigger feel
  • Smooth, light first-stage take-up with a crisp second-stage break
  • Non-adjustable design suits rifles where simplicity is required
  • Drop-in installation for mil-spec AR-15 and most AR-10 lowers
  • M4 curved trigger bow for a familiar trigger profile

Considerations & Trade-offs

  • The SSA-E is a semi-automatic-only, non-adjustable 2-stage trigger, so it is built around a fixed pull profile rather than user tuning.
  • Its reduced pull weight and crisp break are geared toward precision use, which may feel different from a heavier combat-style trigger in general-purpose rifles.
  • Fitment is listed for mil-spec AR-15 and most AR-10 lowers, so compatibility should still be confirmed against the specific lower before purchase.
  • Drop-in installation simplifies setup, but it still requires a compatible lower and proper installation to realize the intended trigger feel.

Suggested Comparisons

  • Two-stage AR-15 trigger
  • AR-10 trigger
  • Precision rifle trigger
  • Mil-spec drop-in trigger

Suggested Accessories

  • AR-15/AR-10 lower parts kit
  • Trigger guard
  • Punch set
  • Gun vise block

Frequently Asked Questions

Is the SSA-E a single-stage or two-stage trigger?

It is a 2-stage, semi-automatic trigger.

Will this trigger fit my rifle?

It fits mil-spec AR-15 and most AR-10 lowers.

Is the SSA-E adjustable?

No. The product description says non-adjustability is a requirement, so this trigger is not adjustable.

What is the pull weight range?

The listed total pull weight is 2.9-3.8 lbs.

What materials are the trigger and hammer made from?

The trigger and hammer are made from S7 tool steel.