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Geissele Automatics

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Geissele Automatics Products

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Upgrade your AR-15 with the Geissele Maritime Bolt Catch ⚙️ for reliable operation in any environment. Perfect for left-handed shooters!

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS AR-15 MARITIME BOLT CATCH STEEL BLACK
AR-15 MARITIME BOLT CATCH BLACK

In stock

£43.90

Get the Geissele Barrel Nut Wrench for easy installation of Geissele barrel nuts. 🔧 Compatible with HK 416 and BRN-4. Perfect for your toolkit!

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS BARREL NUT WRENCH
BARREL NUT WRENCH

In stock

£16.90

Enhance your AR-15's reliability with the Geissele Super 42 Braided Wire Spring & H1 Buffer combo! ⚙️ Experience superior performance today!

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS SUPER 42 BRAIDED WIRE BUFFER SPRING AND BUFFER COMBO, H2
SUPER 42 BRAIDED WIRE SPRING & H1 BUFFER

In stock

£114.90 £99.90 - 139.90

Upgrade your AR-15 with the Geissele Automatics Reaction Rod! 🛠️ This sturdy tool simplifies barrel changes and installations.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS REACTION ROD
AR-15/M16 REACTION ROD

In stock

£129.90

Upgrade your AR-15 with the Geissele MK16 Super Modular Rail! 🌟 Lightweight, durable, and customizable for peak performance.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS MK16 SM RAIL 13.5" M-LOK FOR AR-15 BLK
AR-15 MK16 SUPER MODULAR RAILS M-LOK

In stock

£409.90 £409.90 - 439.90

Upgrade your AR-15 with the Geissele MK14 Super Modular Rail Handguard! 🌟 Lightweight, durable, and perfect for mounting accessories.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS MK14 13.5" SUPER MODULAR RAIL HANDGUARD M-LOK DDC
AR-15 MK14 SUPER MODULAR RAIL HANDGUARD

In stock

£379.90 £344.90 - 439.90

Upgrade your FN SCAR with the Geissele Super SCAR Trigger ⚙️. This non-adjustable, 2-stage trigger enhances CQB and mid-range performance.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS SUPER SCAR 2-STAGE CURVED TRIGGER FOR FN SCAR
SUPER SCAR TRIGGER

In stock

£394.90

Enhance your shooting with the Geissele Hi-Speed National Match Trigger Set for AR-15! 🎯 Adjustable for precision in competition and hunting.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS HI-SPEED NATIONAL MATCH 2-STAGE CURVED TRIGGER SET FOR AR-15
AR-15/AR 308 HI-SPEED NATIONAL MATCH TRIGGER SET

In stock

£344.90

Upgrade your AR-15 with the Geissele MK8 10.5" M-LOK rail! 💪 Lightweight, ergonomic, and perfect for customizing your setup.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS MK8 10.5" M-LOK SUPER MODULAR RAIL BLACK
AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK

In stock

£374.90 £344.90 - 439.90

Upgrade your setup with the HK SMR Accessory Rail! 🛠️ Perfect for attaching lights and grips on Geissele HK SMR. Durable aluminum design.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS HK SMR 3-HOLE 7-SLOT ACCESSORY RAIL BLACK
HK SMR ACCESSORY RAIL

In stock

£54.90 £45.90 - 54.90

Upgrade your AR-15 with Geissele's M-LOK Picatinny Accessory Rails. Precision-machined for secure attachment of lights, lasers, and more! 🔧

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS PICATINNY ACCESSORY RAIL FOR M-LOK HANDGUARDS, 3 SLOTS
PICATINNY ACCESSORY RAILS M-LOK ATTACHMENT

In stock

£28.90 £28.90 - 37.90

Ensure precision with the Geissele 5.56MM Suppressor Alignment Rod. 🛠️ Perfect for aligning your suppressor to the bore for optimal performance.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS 15" 5.56MM SUPPRESSOR ALIGNMENT ROD
5.56MM SUPPRESSOR ALIGNMENT ROD

In stock

£99.90

Upgrade your setup with the Geissele M-LOK Rails for HK416 MK15! 🛠️ Durable, modular, and military-grade for elite performance.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS 10.5" HK416 MK15 SUPER MODULAR RAIL SMR M-LOK BLACK
HK M-LOK RAILS

In stock

£559.90 £559.90 - 629.90

Discover the SUPER PRECISION TRIJICON MRO MOUNTS by Geissele Automatics. 💪 Built for strength and precision, perfect for your Trijicon MRO!

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS LOWER 1/3 CO-WITNESS DDC MRO MOUNT
SUPER PRECISION TRIJICON MRO MOUNTS

Mounting Hardware

In stock

£209.90 £184.90 - 209.90

Discover the AR-15 MK4 Federal Super Modular Rails! 💪 Lightweight, durable, and M-LOK compatible for ultimate versatility in every mission.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS MK4 10" FEDERAL SUPER MODULAR RAIL M-LOK DDC
AR-15 MK4 FEDERAL SUPER MODULAR RAILS

In stock

£479.90 £449.90 - 489.90

Discover the SUPER PRECISION AIMPOINT MICRO MOUNTS for your red dot optics! 🔍 Built from high-strength aluminum for ultimate reliability.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS ABSOLUTE CO-WITNESS BLACK MICRO MOUNT
SUPER PRECISION AIMPOINT MICRO MOUNTS

Mounting Hardware

In stock

£184.90 £184.90 - 199.90

Upgrade your AR-15 assembly with the Geissele Reaction Block! 🛠️ Enjoy a stable platform for easy buffer tube installation and lower receiver operations.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS AR-15/M4 REACTION BLOCK(MIL-SPEC BUFFER TUBE ONLY)
AR-15/M4 REACTION BLOCK

Bench & Vise Blocks

In stock

£254.90

Ensure perfect suppressor alignment with the Geissele 9mm Gage 🔧. Precision-engineered for optimal firearm performance and reliability.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS 5.45MM SUPPRESSOR ALIGNMENT GAGE
SUPPRESSOR ALIGNMENT GAGE 9MM

Barrel Tools | Barrel Alignment Tools

In stock

£169.90 £104.90 - 169.90

Upgrade your AR-15 with the Geissele Premium Buffer Tube! 💪 Durable, mil-spec, and made in the USA for the perfect fit.

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS AR-15 PREMIUM BUFFER TUBE BLACK
AR-15 PREMIUM BUFFER TUBES MIL-SPEC

In stock

£94.90 £94.90 - 104.90

Upgrade your AR-15 with the Geissele Ambidextrous Posi-Lock Safety for a solid tactile feel and easy access. 🔒 Perfect for any shooter!

GEISSELE AUTOMATICS

GEISSELE AUTOMATICS AR-15 AMBI POSI-LOCK SAFETY
AR-15 AMBIDEXTROUS POSI-LOCK SAFETY

In stock

£54.90

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Geissele's Maritime AR-15 Bolt Catch is designed for reliable use in wet conditions and with gloves, featuring an oversized, textured button for easy operation.
The bolt catch is made of strong, heat-treated 8620 steel with a black Parkerized finish for durability and corrosion resistance.
It is suitable for left-handed shooters, allowing bolt manipulation without altering grip, and fits any standard mil-spec AR-15/M16/M4 lower receiver.

The Geissele Super 42 Spring is designed for AR-15 rifles, using a unique three-strand wire to enhance reliability and function.
Its harmonic damper and energy absorber characteristics reduce the chance of spring failure and improve rifle performance.
The H1 weight buffer is included and specifically designed to work with the Super 42 spring, which is incompatible with standard buffers.

The AR-15/M16 Reaction Rod is a sturdy steel tool designed for secure barrel changes and parts installation on AR-15 rifles.
Its unique design prevents marring of the barrel's exterior and allows for the installation without removing sights or optics.
The rod is made to be clamped in a bench vise and has integral splines that lock into the barrel extension to prevent it from turning during torque application.

The Geissele Super Modular Rail MK16 is designed for AR-15s and is adopted by USASOC for the URG-I program, featuring anti-rotation tabs and set-screws for stability.
It offers customization with a top M1913 picatinny rail and M-LOK slots on every quadrant, made from 6061-T6 Aluminum with Type-3 Hardcoat anodizing.
The MK16 is available in two lengths, 9.3" and 13.5", with the 13.5" version weighing 13.4oz (14.9oz with barrel nut) and providing ample space for accessories.

The Geissele MK14 Super Modular Rail handguard features M-LOK slots and an uninterrupted Picatinny rail for versatile accessory mounting.
This handguard is designed with a slim cross-section for comfortable handling and includes sockets for QD sling swivels.
It is constructed from strong, lightweight 6061 T6 aluminum and comes with a proprietary free-float barrel nut for easy installation.

The Geissele Super SCAR trigger is a specialized, non-adjustable, two-stage trigger designed for the FN SCAR 16 and FN SCAR 17.
It is optimized for Close Quarters Battle (CQB) and mid-range use and must be fitted into the FN-manufactured standard polymer trigger housing.
The trigger has a total pull weight of approximately 4.5lbs, with 2.5lbs on the first stage and 2lbs on the second stage, and comes with Aeroshell #6 Lubricant.

The Geissele Hi-Speed National Match AR-15 Trigger is adjustable and designed for competition, hunting, and tactical sniper use.
It includes three spring sets for Service Rifle, Designated Marksman Rifle, and Match Rifle, catering to different shooting disciplines and regulations.
Trigger pull weights are customizable, with specific ranges for each spring set, allowing shooters to fine-tune for precision and control.

The AR-15/M16 MK 8 Super Modular Rail by Geissele Automatics LLC is an ergonomic, lightweight rail system with M-LOK attachment points along its length.
This single piece rail is machined from aircraft grade aluminum with a hardcoat anodized finish for durability and strength-to-weight performance.
The rail system is free-floating and attaches securely via a long barrel nut, featuring non-rotating QD slots and the flexibility to place accessory rails at 45° intervals.

Geissele offers precision-machined Picatinny Accessory Rails for M-LOK handguards in 3-, 5-, and 7-slot options.
The rails are constructed from durable 7075-T6 aluminum with a hardcoat-anodized finish for secure accessory attachment.
These rails are designed for AR-15s and are ideal for mounting a variety of AR accessories like lights, lasers, and grips.

The Geissele Suppressor Alignment Rod is a precision instrument used to ensure a suppressor is correctly aligned with the firearm's barrel.
It checks several alignment factors including centerline, perpendicularity of the barrel shoulder, and the alignment of both the muzzle device and suppressor mounting geometry.
Designed for the AR-15, this tool has a product specification of 5.56mm with an outer diameter of 0.2175 inches.

The Geissele SMR HK416 MK15 is a durable and modular M-LOK rail system designed for the HK416, utilizing the stock HK barrel nut and meeting military specifications.
Constructed from 6061-T6 aluminum with a type 3 hardcoat anodized finish, it offers M-LOK mounting at 3, 6, and 9 o’clock positions and features a full picatinny rail on top.
It is available in black, has a length of 10.5 inches, and weighs 10.3oz, making it a trusted choice for elite warfighters who have contributed to its development.

The AR-15 MK4 Federal Super Modular Rail by Geissele Automatics LLC is used by the FBI and is designed for strength, modularity, and M-Lok compatibility.
It features integrated M1913 picatinny rail sections at the 3, 6, and 9 o’clock positions, with an elongated section at 6 o’clock for accessory accommodation.
The rail offers maximum heat dissipation, light weight, and is available in multiple colors including Black, DDC, Gray, and OD Green, all in a 10” length made of aluminum.

The mount is precision machined from 7075-T6 aluminum and designed specifically for Aimpoint T1 and similar red dot optics.
Available in absolute co-witness and lower third co-witness options, with a black or DDC type 3 hard coat anodize.
Features a strong clamping force of 1,400 pounds and 3 shear lugs for maximum rigidity and return to zero.

The Geissele Reaction Block is specifically designed for assembling AR-15 lower receivers with MIL-SPEC buffer tubes.
It allows the lower receiver to be rotated in 90-degree increments for ease of access by simply adjusting the nylon screws.
Provides a stable platform for lower receiver operations and simplifies the installation of the buffer retainer nut.

The Geissele Premium Buffer Tube is made from 7075-T6 Aluminum with a Type 3 Hardcoat Anodize finish.
It is mil-spec with 6 stock positions, compatible with AR-15 lower and most mil-spec AR-15 stocks.
Manufactured in the USA, the buffer tube package includes a mil-spec castle nut and end plate.

The Geissele Posi-Lock Ambidextrous Safety provides a solid, tactile "Click!" indicating secure engagement.
It is designed for easy access with either hand, enhancing its ambidextrous functionality.
Constructed from 400 Series stainless-steel, it ensures reliability and durability even in harsh conditions.