My Account (Sign in)
Your basket is empty.
0
Basket
contact us by phone Help and contact
Free standard delivery over £199
100-day return policy
My Account (Sign in)
Wish list
Your basket is empty. (0)
Basket
Sale

Over 300,000 customers - we say thank you!

4.93/5 "Very good" (1400+ reviews)

40,000+ products for hunting and shooting sports

Rifle Parts Bolt Parts Bolt Carrier Groups GEISSELE AUTOMATICS RELIABILITY ENHANCEMENT KIT H2 Support

Enhance your AR-15's reliability with Geissele's REK, featuring a Stressproof Bolt, REBCG, and Nanoweapon coating for superior durability and performance.

GEISSELE AUTOMATICS RELIABILITY ENHANCEMENT KIT H2

817953026724 100039952

Filters:

Variations
Filters:
Variations:

Variations:

Enhance your AR-15's reliability with Geissele's REK, featuring a Stressproof Bolt, REBCG, and Nanoweapon coating for superior durability and performance.
RELIABILITY ENHANCEMENT KIT H2
507.31 GBP 0 £507.31 *
Not available
Cartridge: 5.56 mm NATO Finish: Black Make: AR-15 Product no.: 100039952
Not available
507.31 GBP 0 £507.31 *
Enhance your AR-15's reliability with the Geissele REK, featuring a stressproof bolt, REBCG, and Nanoweapon coating for superior durability and performance.
RELIABILITY ENHANCEMENT KIT H1
496.15 GBP 0 £496.15 *
Not available
Cartridge: 5.56 mm NATO Finish: Black Make: AR-15 Product no.: 100039951
Not available
496.15 GBP 0 £496.15 *
Upgrade your AR-15 with the Geissele REK H3 for enhanced reliability, featuring a Stressproof Bolt, REBCG, and Nanoweapon coating for superior durability.
RELIABILITY ENHANCEMENT KIT H3
523.14 GBP 0 £523.14 *
Not available
Cartridge: 5.56 mm NATO Finish: Black Make: AR-15 Product no.: 100039953
Not available
523.14 GBP 0 £523.14 *
496.15 523.14 3 GBP
507.31 GBP £507.31

Prices inclusive of duty & VAT.

Product no.: 100039952

Mfr. No.: 05-492-H2

817953026724 AR-15 RELIABILITY ENHANCEMENT KITS The Geissele Reliability Enhancement Kit (REK) includes the Geissele Reliability Enhanced Bolt Carrier Group (REBCG) and the Geissele Super 42 Braided Wire Buffer Spring & Buffer, available in H2 or H3 configuration for 5.56mm AR-15 pattern rifles. The REK represents the culmination of years of extensive testing and fine-tuning to deliver the most reliable operating system upgrade for your carbine. Manufactured in Geissele’s state-of-the-art facility in North Wales, PA, the REBCG is a full-mass, full-auto rated M16/M4 bolt carrier group. The carrier is machined from mil-spec 8620 steel and features a properly torqued and staked, chrome-lined gas key. The cam pin, machined from H13 medical steel, is coated with Nanoweapon (Chrome-Nitride) for maximum corrosion and wear resistance. The extended upper rails on the carrier provide greater stability and dramatically increase feeding reliability. The carrier is also coated with Nanoweapon for added durability. The Geissele Stressproof Bolt, made from Carpenter 158+, is cleaner and stronger than the typical material spec’d by the US Government. Geissele engineers collaborated with Carpenter Steel metallurgists in Reading, PA, to produce this special heat of material. The forged bolt manipulates the metal's grain structure, yielding a bolt capable of five times the life of a mil-spec bolt. Each bolt undergoes rigorous inspection, high pressure testing, magnetic particle inspection, and is coated with Nanoweapon. Nanoweapon, a family of coatings similar to DSL (Durable Solid Lubricant) developed by Picatinny Arsenal (US ARMY ARDEC), is exclusively available from Geissele Automatics. Geissele engineers worked for over three years with the research and development company that collaborated with Picatinny to fine-tune the coating. Nanoweapon provides unparalleled corrosion, wear, and abrasion resistance. Applied at low temperatures, the coating does not affect the part's metallurgy and has a surface hardness equivalent to 82HRC. This hardness allows it to easily reject carbon and facilitate cleaning, enabling normal firearm operation with less lubrication.
Not available
Be the first to rate this product

Not available.

100-Day Return Policy
No charges until we ship
No charge:
Your credit card will not be charged when you place your order.

No commitments:
You are under no obligation until the goods are shipped. You can cancel your order at any time before shipping - free of charge.

Not until shipping:
Your credit card will only be charged once we ship your order. Not before.
Wish List Ask question
order by phone
496.15 523.14 3 GBP
Description Specification Customers reviews Accessories

GEISSELE AUTOMATICS RELIABILITY ENHANCEMENT KIT H2

507.31 GBP £507.31

Prices inclusive of duty & VAT.

Is a 'Call to order' product.
Requires order by phone

Description:

Enhance the reliability of your AR-15 with Geissele's innovative kits!

The Geissele Reliability Enhancement Kit (REK) combines cutting-edge technology with extensive testing to provide the ultimate upgrade for your AR-15 pattern rifle. This kit includes the Geissele Reliability Enhanced Bolt Carrier Group (REBCG) and the Geissele Super 42 Braided Wire Buffer Spring & Buffer, available in H2 or H3 configurations for 5.56mm rifles.

Key Features:

  • Full-Mass, Full-Auto Rated: The REBCG is manufactured from mil-spec 8620 steel, ensuring durability and reliability.
  • Advanced Coating: Features Nanoweapon (Chrome-Nitride) for maximum corrosion and wear resistance.
  • Enhanced Stability: Extended upper rails on the carrier improve feeding reliability.
  • Stressproof Bolt: Made from Carpenter 158+, offering superior strength and cleanliness compared to standard materials.
  • Rigorous Testing: Each bolt undergoes high pressure testing and magnetic particle inspection to guarantee quality.

Manufactured in Geissele’s state-of-the-art facility in North Wales, PA, the REBCG is designed for optimal performance. The collaboration with Carpenter Steel metallurgists has resulted in a forged bolt that manipulates the metal's grain structure, yielding a lifespan five times that of a mil-spec bolt.

Nanoweapon, developed in collaboration with Picatinny Arsenal, offers unparalleled resistance to corrosion, wear, and abrasion. Applied at low temperatures, this coating maintains the integrity of the part's metallurgy and possesses a surface hardness equivalent to 82HRC, facilitating easier cleaning and reduced lubrication needs.

Upgrade your firearm today with the Geissele Reliability Enhancement Kit and experience the difference in performance and reliability!



Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The Geissele Reliability Enhancement Kit for AR-15 includes a bolt carrier group and a braided wire buffer spring & buffer, available in H1, H2, or H3 configurations.
  2. Components are made from high-quality materials like mil-spec 8620 steel and Carpenter 158+ steel, with Nanoweapon coating for corrosion and wear resistance.
  3. The kit is designed to significantly improve the reliability and lifespan of the AR-15's operating system.

Attributes

  • Cartridge: 
    5.56 mm NATO
  • Finish: 
    Black
  • Weapon type: 
    AR-15
  • Delivery weight: 0.726kg
  • Shipping height: 76mm
  • Shipping width: 76mm
  • Shipping length: 381mm
  • UPC: 817953026724

Item details

Made in USA
US export classification: I(g)

Customers reviews

Customer ratings (0)

0 / 5

Variations:

Enhance your AR-15's reliability with Geissele's REK, featuring a Stressproof Bolt, REBCG, and Nanoweapon coating for superior durability and performance.
RELIABILITY ENHANCEMENT KIT H2
507.31 GBP 0 £507.31 *
Not available
Cartridge: 5.56 mm NATO Finish: Black Make: AR-15 Product no.: 100039952
Not available
507.31 GBP 0 £507.31 *
Enhance your AR-15's reliability with the Geissele REK, featuring a stressproof bolt, REBCG, and Nanoweapon coating for superior durability and performance.
RELIABILITY ENHANCEMENT KIT H1
496.15 GBP 0 £496.15 *
Not available
Cartridge: 5.56 mm NATO Finish: Black Make: AR-15 Product no.: 100039951
Not available
496.15 GBP 0 £496.15 *
Upgrade your AR-15 with the Geissele REK H3 for enhanced reliability, featuring a Stressproof Bolt, REBCG, and Nanoweapon coating for superior durability.
RELIABILITY ENHANCEMENT KIT H3
523.14 GBP 0 £523.14 *
Not available
Cartridge: 5.56 mm NATO Finish: Black Make: AR-15 Product no.: 100039953
Not available
523.14 GBP 0 £523.14 *

Oops! Something went wrong.

We encountered an error while loading this content. Please refresh the page to continue. If the issue persists, contact our customer support.

Site Navigation
Product Categories
Ordering
Customer Service

Connect

Secure payment methods

VisaMasterCardAmex 

Trade Associations

Trade member of the British Association for Shooting and ConservationGTAC.I.P.

Welcome!

Welcome to Odos!

 

Your European partner for shooting sports, hunting and legal firearm ownership. We share your passion and offer a huge selection of firearms, parts, accessories, gunsmithing tools, optics and reloading equipment, including many products that are hard to find elsewhere in Europe.

Our mission goes beyond selling products. We want to strengthen legal firearm ownership, remove unnecessary barriers and grow our community.

 

For Shooters, By Shooters

We're part of the community ourselves. We share your passion and understand what matters to you.

 

Huge Selection

From everyday replacement parts to rare specialist equipment, you'll find everything you need in one place.

 

Decades of Experience. A New Name.

Formerly Midway Europe, then Brownells Europe, now Odos. Since the 1990s, we've stood for expertise, experience and a passion for firearms.

Explore our selection and support our mission to strengthen legal firearm ownership in Europe with every purchase.

 

Odos. Our Way Forward.

Odos Norge - Komplett utvalg av ladeutstyr, våpendeler, kuler, hylser, kikkerter, optikk og luftvåpen Odos Österreich - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Odos Switzerland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Odos Deutschland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Odos France - Le plus grand fournisseur d'Accessoires pour le tir, Pièces détachées & Outils d'Armurier Odos Iberica - El mayor proveedor de accesorios para el Tiro, Piezas y herramientas del armero. Odos Sverige - Världens största leverantör av Vapendelar, Vapensmide Verktyg & Skyttetillbehör Odos Suomi Odos Italia - Il negozio del più grande rivenditore di componenti e accessori per armi da tiro, difesa e caccia Odos Polska - Największy na świecie dostawca części broni, narzędzi rusznikarskich & akcesoriów strzeleckich Odos Česko - Největší světový dodavatel součástí zbraní, střeleckého příslušenství a zbrojního nářadí
*
Prices inclusive of duty & VAT.
Classical viewClassical view Mobile viewMobile view
Back to top