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AR-15 Full-Auto BCG – Obsidian Black

$319.95

Description

Trinity Triggers AR-15 Full-Auto BCG – Obsidian Black

.223 / 5.56 / .300 BLK Compatible

The Obsidian Black Trinity Triggers AR-15 Bolt Carrier Group (BCG) is built for durability and consistent function under demanding conditions. Featuring a full-auto M16 carrier profile, it provides optimal mass and timing for reliable cycling across multiple calibers.

Constructed from 8620 steel with a Carpenter 158 bolt, this BCG is manufactured to Mil-Spec specifications and designed to withstand high round counts. The bolt is shot-peened for added strength, while critical surfaces are chrome-lined for increased wear resistance and easier cleaning.

The low-friction surface treatment minimizes drag and carbon fouling, improving overall system efficiency and maintaining performance over time.

Every unit is HPT and MPI inspected, ensuring quality and dependability in real-world use.

Compatible with forced reset trigger systems and high-cycle-rate applications

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FAQs

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Obsidian Black AR-15 bolt carrier group designed for smooth cycling and durability
Detail of AR-15 BCG coating designed to minimize carbon buildup and improve cycling
AR-15 bolt carrier group HPT and MPI tested for reliability and strength
M16 profile bolt carrier group for AR-15 rifles in 5.56 and 300 Blackout

AR-15 Full-Auto BCG – Obsidian Black

$319.95

Description

Trinity Triggers AR-15 Full-Auto BCG – Obsidian Black

.223 / 5.56 / .300 BLK Compatible

The Obsidian Black Trinity Triggers AR-15 Bolt Carrier Group (BCG) is built for durability and consistent function under demanding conditions. Featuring a full-auto M16 carrier profile, it provides optimal mass and timing for reliable cycling across multiple calibers.

Constructed from 8620 steel with a Carpenter 158 bolt, this BCG is manufactured to Mil-Spec specifications and designed to withstand high round counts. The bolt is shot-peened for added strength, while critical surfaces are chrome-lined for increased wear resistance and easier cleaning.

The low-friction surface treatment minimizes drag and carbon fouling, improving overall system efficiency and maintaining performance over time.

Every unit is HPT and MPI inspected, ensuring quality and dependability in real-world use.

Compatible with forced reset trigger systems and high-cycle-rate applications

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

The Trinity Triggers AR-15 Full-Auto Bolt Carrier Group – Obsidian Black delivers duty-grade reliability for .223, 5.56, and .300 Blackout rifles. Built with a full-auto M16 carrier profile, chrome-lined internals, and a low-friction coating, this BCG ensures smoother operation, easier cleaning, and consistent performance. HPT and MPI tested.

A high-quality AR-15 bolt carrier group is critical for reliability and performance. Trinity Triggers BCGs are designed with a full-auto M16 profile for smoother cycling and improved function across a wide range of ammunition types. Chrome-lined internals and advanced coatings reduce friction and carbon buildup, making maintenance easier while extending service life.

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