Geissele Automatics

Based in Pennsylvania, Geissele is known for developing some of the best AR15 parts and accessories available on the market.  First established in 2004 as a manufacturer of trigger mechanisms for the AR15 rifle, Geissele Automatics has since expanded their line of AR15 products to include AR15 charging handles, MK4 M-LOK handguards, and AR15 Mil-Spec lower parts kits, among others.

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Today, Geissele Automatics specializes in AR15 triggers and handguards. Their Super Select-Fire trigger (SSF), designed by company founder Bill Geissele, is used in M4 carbine based weapons utilized by certain entities in the U.S. Special Operations community. Geissele Automatics also developed the Super Semi-Automatic (SSA) trigger for law enforcement and civilians who do not need select-fire capability.

Geissele Automatics triggers are known for their safety and reliability. AR15 Discounts offers the widely popular, best-selling Geissele Super Dynamic 3 GUN (SD-3G) Trigger at a discounted price. It is a unique, hybrid trigger that combines the features of traditional two-stage and single-stage triggers with the safety and robustness of a two-stage combat trigger. AR15 Discounts also offers the Geissele 2 Stage (G2S), which was designed to be a high quality, cost effective option of the SSA.

Looking for other Geissele AR15 parts and tools? AR15 Discounts carries the Geissele AR15/M4 Reaction Block / Lower Receiver Assembly Tool and the Geissele 5.56 Suppressor Alignment Gage (SAR) at competitive prices, both must-haves for AR15 build junkies. The Geissele Roll Pin Starter Tool for Gas Block, another best seller from AR15 Discounts, is designed to help you build your custom AR15 rifle with ease.

Geissele also offers a wide range of handguards, including MK4, MK8, MK13, and MK14 models. The best-selling Super Modular Rail (SMR) MK4 M-LOK™ is Geissele’s ultra-lightweight M-LOK option, and comes bundled with a low-profile Geissele Super Gas Block, a $59 value! This versatile, modular MK4 handguard features maximum venting for heat dissipation and M1913 picatinny rail sections at the fore of the rail in the 3, 6 and 9 o’clock positions. This model also includes Geissele's proprietary 2.25" long barrel nut, which increases accuracy and zero repeatability during disassembly and reassembly when performing maintenance.

Geissele 2 Stage G2S Trigger Trigger Group Ar15Discounts Sold out

Geissele 2 Stage G2S Trigger

Geissele Automatics

$165.00
1

The Geissele 2 Stage (G2S) was designed to be a high quality, cost effective option of the SSA. The G2S is a 4.5lb. non-adjustable combat trigger t...

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$165.00
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Geissele Maritime Bolt Catch Lower Part Ar15Discounts

Geissele Maritime Bolt Catch

Geissele Automatics

$29.00
1

The Geissele Maritime Bolt Catch is designed with the warfighter in mind and will work with any lower receiver designed to accept a mil-spec M16/M4...

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$29.00
Geissele Super Modular Rail Mk8 M-Lok Handguard - Black Handguard Ar15Discounts

Geissele Super Modular Rail MK8 M-LOK Handguard - Black

Geissele Automatics

from $225.00

The Super Modular Rail (SMR) MK8 M-LOK is Geissele's ultra-modular model. The SMR MK8 is one of the first rails available to utilize the Magpul M-L...

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from $225.00
Geissele Super Modular Rail Mk14 M-Lok Handguard - Ddc Handguard Ar15Discounts

Geissele Super Modular Rail MK14 M-LOK Handguard - DDC

Geissele Automatics

from $275.00

The MK14 is the latest entry to the Geissele line up of Super Modular Rails. The new handguard design offers a smaller diameter and overall height ...

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from $275.00
Geissele Super Modular Rail Mk8 M-Lok Handguard - Ddc Handguard Ar15Discounts

Geissele Super Modular Rail MK8 M-LOK Handguard - DDC

Geissele Automatics

from $250.00

The Super Modular Rail (SMR) MK8 M-LOK is Geissele's ultra-modular model. The SMR MK8 is one of the first rails available to utilize the Magpul M-L...

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from $250.00
Geissele Gas Block Pin Punch Set Tool Ar15Discounts

Geissele Gas Block Pin Punch Set

Geissele Automatics

$25.00

The Geissele Gas Block Pin Punch Set is made specifically for the removal and installation of the 0.078" roll pin that secures the gas tube to the ...

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$25.00
Geissele Super Modular Rail Mk13 M-Lok Handguard - Ddc Handguard Ar15Discounts

Geissele Super Modular Rail MK13 M-LOK Handguard - DDC

Geissele Automatics

from $275.00

The MK13 is the latest entry to the Geissele line up of Super Modular Rails. The new handguard design offers a smaller diameter and overall height ...

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from $275.00
Geissele Super Modular Rail Mk4 M-Lok Handguard - Ddc Handguard Ar15Discounts

Geissele Super Modular Rail MK4 M-LOK Handguard - DDC

Geissele Automatics

from $250.00

The Super Modular Rail (SMR) MK4 M-LOK is Geissele's ultra-lightweight M-LOK option. These rails are purpose-built and feature integrated M1913 pic...

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from $250.00
Geissele Super Modular Rail Mk4 M-Lok Handguard - Black Handguard Ar15Discounts

Geissele Super Modular Rail MK4 M-LOK Handguard - Black

Geissele Automatics

from $225.00

The Super Modular Rail (SMR) MK4 M-LOK is Geissele's ultra-lightweight M-LOK option. These rails are purpose-built and feature integrated M1913 pic...

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from $225.00
Geissele Super 3 Gun (S3G) Trigger Trigger Group Ar15Discounts

Geissele Super 3 Gun (S3G) Trigger

Geissele Automatics

$240.00

The Geissele Super 3 Gun (S3G) is a semi-automatic, hybrid cross between a single-stage trigger and a traditional 2-stage trigger. Its robust feel ...

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$240.00
Geissele Super Modular Rail Mk13 M-Lok Handguard - Black Handguard Ar15Discounts

Geissele Super Modular Rail MK13 M-LOK Handguard - Black

Geissele Automatics

from $250.00

The MK13 is the latest entry to the Geissele line up of Super Modular Rails. The new handguard design offers a smaller diameter and overall height ...

View full details
from $250.00
Geissele Super Modular Rail Mk14 M-Lok Handguard - Black Handguard Ar15Discounts

Geissele Super Modular Rail MK14 M-LOK Handguard - Black

Geissele Automatics

from $250.00

The MK14 is the latest entry to the Geissele line up of Super Modular Rails. The new handguard design offers a smaller diameter and overall height ...

View full details
from $250.00