Geissele Automatics 5.56 Enhanced AR-15 Bolt Carrier Group - Nanoweapon

Manufacturer: Geissele

SKU: 05-2993

Picture of Geissele Automatics 5.56 Enhanced AR-15 Bolt Carrier Group - Nanoweapon

The Geissele Automatics Reliability Enhanced Bolt Carrier Group is a full mass M16 profile full auto rated BCG built out of premium materials and coatings for long term durability and reliability.

Merchant	Price	Availability
	Price: $393.00	Availability.: Out of stock	Buy

Prices last updated Aug 22, 2025 9:21 PM (CT)

* Product prices and availability are accurate as of the date/time indicated and are subject to change.

Overview

The carrier is machined from 8620 steel and the cam pin is machined from H13 steel. The entire AR-15 Bolt Carrier Group is coated in Nanoweapon which is a Chrome-Nitride finish that increases smoothness and surface hardness for corrosion resistance and cleaning. The carrier also features longer upper rails to prevent carrier tilt and increase feeding reliability. The bolt is forged from Carpenter 158 steel and undergoes a proprietary heat-treating process that reduces impurities and makes it stronger and more consistent than other C158 bolts. Additionally, each bolt undergoes high pressure testing, magnetic particle inspection, and a rigorous inspection process. If you are looking for an AR-15 5.56 Bolt Carrier Group that will last a lifetime, you can’t go wrong with the Geissele Automatics Enhanced BCG.