Fostech Complete Bolt Carrier Group Black

The Fostech Complete Bolt Carrier Group Black is a precision-engineered assembly designed for use with the Echo AR-II and Echo Sport platforms. This product is ideal for shooters looking for a reliable drop-in replacement or upgrade component for their semi-automatic rifles. It is built to mil-spec standards, ensuring durability and performance in various shooting scenarios.

Constructed from 9310 alloy steel with shot-peened hardening and magnetic particle inspection, this bolt carrier group offers exceptional fatigue resistance and dimensional consistency. The hardened tool steel extractor, combined with a Viton mil-spec O-ring, ensures reliable case extraction across different pressure curves and environmental conditions. Additionally, three mil-spec gas rings help maintain optimal bolt-to-carrier gap while minimizing carbon fouling.

This bolt carrier group is particularly beneficial for law enforcement transition training, tactical rifle maintenance, or civilian precision shooting. Its compatibility with .223 Remington, 5.56 NATO, and .300 Blackout ammunition makes it a versatile choice for shooters who utilize multiple load configurations within the same upper receiver.