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AR-15 Full-Auto BCG – Mercury Gray

$325.95

Description

Trinity Triggers AR-15 Full-Auto BCG – Mercury Gray

.223 / 5.56 / .300 BLK Compatible

The Mercury Gray Trinity Triggers AR-15 Bolt Carrier Group (BCG) is engineered for shooters who demand consistent performance and long service life. Designed with a full-auto M16 carrier profile, this BCG provides increased mass for smoother cycling and reliable operation across a wide range of ammunition. Compatible with forced reset trigger systems and high-cycle-rate applications

Manufactured to strict Mil-Spec standards, the carrier is machined from 8620 aircraft-grade steel and paired with a Carpenter 158 bolt that is shot-peened for enhanced strength. Critical components are chrome-lined to reduce friction, improve longevity, and simplify maintenance.

An advanced low-friction surface treatment helps reduce carbon buildup and operating temperatures, keeping the system running cleaner and more efficiently under sustained use.

Each BCG is High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) to ensure structural integrity and performance you can rely on.

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AR-15 Full-Auto BCG – Mercury Gray

$325.95

Description

Trinity Triggers AR-15 Full-Auto BCG – Mercury Gray

.223 / 5.56 / .300 BLK Compatible

The Mercury Gray Trinity Triggers AR-15 Bolt Carrier Group (BCG) is engineered for shooters who demand consistent performance and long service life. Designed with a full-auto M16 carrier profile, this BCG provides increased mass for smoother cycling and reliable operation across a wide range of ammunition. Compatible with forced reset trigger systems and high-cycle-rate applications

Manufactured to strict Mil-Spec standards, the carrier is machined from 8620 aircraft-grade steel and paired with a Carpenter 158 bolt that is shot-peened for enhanced strength. Critical components are chrome-lined to reduce friction, improve longevity, and simplify maintenance.

An advanced low-friction surface treatment helps reduce carbon buildup and operating temperatures, keeping the system running cleaner and more efficiently under sustained use.

Each BCG is High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) to ensure structural integrity and performance you can rely on.

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 – Mercury Gray is built for reliable performance across .223 Remington, 5.56 NATO, and .300 Blackout platforms. Featuring a full-auto M16 carrier profile, Mil-Spec materials, and advanced low-friction surface treatment, this BCG delivers smooth cycling, reduced fouling, and long-term durability. Each unit is HPT and MPI inspected for dependable operation.

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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