AT3 Tactical

AT3 Tactical AR-15 Bolt Carrier Group BCG 5.56 NATO/.300 Blackout Black Nitride

AT3 Tactical AR-15 Bolt Carrier Group BCG 5.56 NATO/.300 Blackout Black Nitride - Bolt Carrier Group for AR-15 - view 1
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AT3 Tactical

Overview

The AT3 Tactical AR-15 Bolt Carrier Group BCG 5.56 NATO/.300 Blackout Black Nitride is a bolt carrier group. Compare prices from multiple merchants and find the best deal.

Specifications

MPNBCGM16BN
Caliber5.56 NATO
FinishNitride

Available Merchants(2)

Prices checked

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August 2026 on GunPartPicker

AT3 Tactical AR-15 Bolt Carrier Group BCG 5.56 NATO/.300 Blackout Black Nitride ranked #123 of the 229 bolt carrier groups builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since June 2026. All time, it ranks #78 of the 442 bolt carrier groups builders have added.

It was in stock most days in August 2026, and today only AT3 Tactical has it in stock. It dipped to $69.69 at AT3 Tactical for a stretch in August 2026, well under its usual $79.99 to $81.99, so sales do come around. Buying today, the lowest price is $69.69 at AT3 Tactical, which matches the best price we saw in August.

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Frequently Built With

The part most often added in each category by the 7 builds that include this one

Tacfire AR-15 Stripped Upper Receiver - Minus BCG

Tacfire AR-15 Stripped Upper Receiver - Minus BCG

Upper Receiver$62in 2 builds
Wilson Combat AR-15 Lo-Profile Gas Block .750" Black

Wilson Combat AR-15 Lo-Profile Gas Block .750" Black

Gas Block$33in 3 builds
Tacfire's 7" ACE M-LOK Handguard for AR-15 - Black, Balance and Versatility in One - HG20-7

Tacfire's 7" ACE M-LOK Handguard for AR-15 - Black, Balance and Versatility in One - HG20-7

Handguard$33in 1 build
Diamondback 223 Wylde 18in Black QPQ Stainless Steel Barrel

Diamondback 223 Wylde 18in Black QPQ Stainless Steel Barrel

Barrel$87in 1 build
Wilson Combat AR-15 Rifle Length Gas Tube Stainless Steel

Wilson Combat AR-15 Rifle Length Gas Tube Stainless Steel

Gas Tube$13in 1 build
PSA PA15 Complete Classic EPT A2 Lower Receiver - 7781023

PSA PA15 Complete Classic EPT A2 Lower Receiver - 7781023

Lower Receiver$190in 1 build

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

87.4%
AR-1587.4%
AR-1010.2%
AR-92.4%

Caliber

71.6%
5.56 NATO71.6%
.223 Wylde9.3%
300 Blackout7.6%
.308 Win4.1%
9mm1.8%
Other5.1%

Gas System

50.5%
Mid-Length50.5%
Carbine26%
Rifle11.5%
Pistol10.8%
Blowback0.9%
Other0.3%

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