Geissele Automatics Reliability Enhancement KIT H2

Geissele Automatics Llc Reliability Enhancement Kit H2 - Bolt Carrier Group for AR-15 - view 1
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Geissele

Overview

The Geissele Automatics Reliability Enhancement Kit H2 is designed for the 5.56 NATO caliber and features an M16 style bolt carrier, which enhances the reliability and function of your AR-15 platform. Its black finish provides a sleek look while also ensuring durability. This kit is commonly found in builds utilizing a mid-length gas system, making it ideal for those looking to optimize performance in that configuration.

Specifications

MPN05-492-H2
StyleM16 Bolt Carrier
Caliber5.56 NATO
FinishBlack

Available Merchants(6)

Prices checked

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Ammunition Depot logo
Ammunition Depot
~$28.90 est. shipping
Shipping Speed
In Stock
$389.99
Optics Planet logo
Optics Planet
Free shipping
Shipping Speed
In Stock
$422.10
BattleHawk Armory logo
BattleHawk Armory
Shipping varies
Shipping Speed
In Stock
$440.00
Primary Arms logo
Primary Arms
Free shipping
Shipping Speed
In Stock
$469.00
Palmetto State Armory logo
Palmetto State Armory
Free shipping
Shipping Speed
In Stock
$469.99
Brownells logo
Brownells
Free shipping
Shipping Speed
Out of Stock
$469.00

October 2026 on GunPartPicker

Geissele Automatics Reliability Enhancement KIT H2 ranked #98 of the 258 bolt carrier groups builders added on GunPartPicker in October 2026. Builders have been adding it to their builds on GunPartPicker since July 2026. All time, it ranks #187 of the 505 bolt carrier groups builders have added.

It was hard to find in October 2026, in stock on only 5 of the 18 days we checked, and today 5 of the 6 retailers we track have it in stock. The best price drifted down from $440 to $389.99 over October 2026 without a real sale. Buying today, the lowest price is $389.99 at Ammunition Depot, which matches the best price we saw in October.

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Frequently Built With

The part most often added in each category by the builds that include this one

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

90.7%
AR-1590.7%
AR-106.4%
AR-92.8%

Caliber

69.5%
5.56 NATO69.5%
300 Blackout8.9%
.223 Wylde8.8%
.308 Win5%
9mm2.5%
Other5.2%

Gas System

51.1%
Mid-Length51.1%
Carbine26.3%
Pistol10.9%
Rifle10.2%
Blowback1.1%
Other0.3%

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