AR15 and M16 Bolt Carrier Groups | Aerospace Arms

We offer a wide selection of high quality nickel boron (NiB), black nitride, and phosphate AR15 and M16 bolt carrier groups along with bolt replacement parts. We also carry titanium, skeletonized, regulated, and enhanced bolt carrier groups for your specialty AR15 build. Order one today!

Aero Precision

Aero Precision 6.5 Grendel / 6mm ARC Bolt Carrier Group, Complete (with Logo) - Black Nitride

Retail: $154.99

Was:

Now: $144.99

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Geissele Automatics

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

Retail:

Was:

Now: $365.00

Out of stock
FailZero

FailZero, 450 Bushmaster AR-15 Bolt Carrier Group - No Hammer, EXO Nickel Boron Coated

Retail: $189.99

Was:

Now: $169.99

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Sale

LANTAC

LANTAC Enhanced Complete Bolt Carrier Group TiN Coating, 5.56 NATO E-BCG

Retail: $339.99

Was: $329.99

Now: $305.99

Out of stock
FailZero

FailZero M16/M4 Bolt Carrier Group with Hammer, EXO Nickel Boron Coated, Nickel Finish

Retail: $189.99

Was:

Now: $159.99

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FailZero

FailZero M16/M4 Bolt Carrier Group, No Hammer, EXO Nickel Boron Coated, Matte Finish

Retail: $179.99

Was:

Now: $139.99

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FailZero

FailZero AR-15 Bolt Carrier Group, No Hammer, EXO Nickel Boron Coated, Matte Finish

Retail: $179.99

Was:

Now: $139.99

Out of stock
Brownells

Brownells 458 Socom / 450 Bushmaster M16 Bolt Carrier Group - Nitride

Retail: $159.99

Was:

Now: $149.99

Add to Cart
LBE Unlimited

LBE Unlimited, Bolt Carrier Group Cam Pin, For AR15/M16, Black Finish

Retail:

Was:

Now: $8.99

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FailZero

FailZero, EXO Nickel Boron Coated Firing Pin

Retail:

Was:

Now: $12.50

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FailZero

FailZero Bolt Carrier Group (No Hammer), 7.62X39 Completely Assembled, EXO Nickel Boron Coated

Retail: $189.99

Was:

Now: $179.99

Add to Cart
Aero Precision

Aero Precision 5.56 Bolt Carrier Group, Complete (No Logo) - Nickel Boron

Retail: $184.99

Was:

Now: $159.99

Add to Cart
Spike's Tactical

Spike's Tactical Complete Lightweight Nickel Boron Bolt Carrier Group

Retail: $250.00

Was:

Now: $229.99

Add to Cart
FailZero

FailZero M16/M4 Bolt Carrier Group, No Hammer, Black Nitride Coated, Black Finish

Retail: $119.99

Was:

Now: $109.99

Add to Cart
FailZero

FailZero 5.56/.223 Bolt Assembly, EXO Nickel Boron Coated

Retail: $85.00

Was:

Now: $82.95

Add to Cart
Aero Precision

Aero Precision 5.56 PRO Series Bolt Carrier Group, Complete (with Logo) - Black Nitride

Retail: $174.99

Was:

Now: $159.99

Add to Cart
FailZero

FailZero AR-15 Bolt Carrier Group, EXO Nickel Boron Coated, Black Finish

Retail: $179.99

Was:

Now: $159.99

Add to Cart
LANTAC

LANTAC M-SPEC® 5.56/.223 BCG

Retail: $189.99

Was:

Now: $179.99

Add to Cart
CMC Triggers

CMC Triggers, Suppressor Optimized, Enhanced Bolt Carrier Group, Black Nitride, 5.56/223/300BLK

Retail:

Was:

Now: $199.99

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LBE Unlimited

LBE Unlimited, AR Bolt Kit, Includes Bolt, Firing Pin, Cam Pin, and Retaining Pin

Retail: $69.99

Was:

Now: $64.99

Add to Cart
Sale

Battle Arms Development

BATTLEARMS Development AR15/M16 Full Auto BCG Bolt Carrier Group

Retail: $145.00

Was: $145.00

Now: $139.99

Add to Cart
Aero Precision

Aero Precision 5.56 Bolt Carrier Group, Complete (with Logo) - Black Nitride

Retail: $149.99

Was:

Now: $134.99

Add to Cart
FailZero

FailZero, Lightweight Bolt Carrier Group, EXO Nickel Boron Coated, Nickel Finish

Retail: $234.99

Was:

Now: $209.99

Add to Cart
2A Armament

2A Armament Titanium Regulated Bolt Carrier Group, AR Platfrom, Black Nitride Finish

Retail: $548.33

Was:

Now: $504.46

Out of stock

Aero Precision

Aero Precision 6.5 Grendel / 6mm ARC Bolt Carrier Group, Complete (with Logo) - Black Nitride

This high quality AR-15 bolt carrier group is a valuable addition to your 6.5 Grendel/6mm ARC build. This Aero Precision BCG has a black nitride coating and with the Aero logo.Features and Specifications: M16-cut carrier Machined from 8620 Tool...

Retail: $154.99

Was:

Now: $144.99

Add to Cart
Geissele Automatics

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

The Reliability Enhanced Bolt Carrier Group is a 5.56mm full-mass, full-auto rated M16/M4 bolt carrier group manufactured in Geissele’s state-of-the-art manufacturing facility in North Wales, PA. The carrier features a properly torqued and staked,...

Retail:

Was:

Now: $365.00

Out of stock
FailZero

FailZero, 450 Bushmaster AR-15 Bolt Carrier Group - No Hammer, EXO Nickel Boron Coated

Not all Nickel Boron is created equal and FailZero is the undisputed pioneer of Nickel Boron technology. When failure is not an option, you can depend on FailZero. The .450 Bushmaster Bolt Carrier Group is fully assembled and drop-in ready for most...

Retail: $189.99

Was:

Now: $169.99

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Sale

LANTAC

LANTAC Enhanced Complete Bolt Carrier Group TiN Coating, 5.56 NATO E-BCG

LANTAC E-BCG®, Enhanced Bolt Carrier Group with TiN coating. M16 Full Auto Style for increased mass and lock time.Our new TiN E-BCG is precision machined from 8620 Steel with a shot peened bolt manufactured from Carpenter 158 and Magnetically...

Retail: $339.99

Was: $329.99

Now: $305.99

Out of stock
FailZero

FailZero M16/M4 Bolt Carrier Group with Hammer, EXO Nickel Boron Coated, Nickel Finish

This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and...

Retail: $189.99

Was:

Now: $159.99

Add to Cart
FailZero

FailZero M16/M4 Bolt Carrier Group, No Hammer, EXO Nickel Boron Coated, Matte Finish

This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and...

Retail: $179.99

Was:

Now: $139.99

Add to Cart
FailZero

FailZero AR-15 Bolt Carrier Group, No Hammer, EXO Nickel Boron Coated, Matte Finish

This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec AR15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases...

Retail: $179.99

Was:

Now: $139.99

Out of stock
Brownells

Brownells 458 Socom / 450 Bushmaster M16 Bolt Carrier Group - Nitride

Get your .458 SOCOM or 450 Bushmaster AR-15 running perfectly with the Brownells M16 .458 SOCOM/450 Bushmaster Bolt Carrier Group, which features construction and finishing designed to provide the best possible performance in your rifle. The Brownells...

Retail: $159.99

Was:

Now: $149.99

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LBE Unlimited

LBE Unlimited, Bolt Carrier Group Cam Pin, For AR15/M16, Black Finish

This is the LBE cam pin for AR15/M16 bolt carrier groups. Fits AR-15 Cam Pin Made in the USA

Retail:

Was:

Now: $8.99

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FailZero

FailZero, EXO Nickel Boron Coated Firing Pin

This EXO Nickel Boron coated firing pin provides a permanently lubricious surface for extreme durability and increased wear and corrosion resistance.

Retail:

Was:

Now: $12.50

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FailZero

FailZero Bolt Carrier Group (No Hammer), 7.62X39 Completely Assembled, EXO Nickel Boron Coated

This 7.62×39 Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil-spec upper receivers chambered in 7.62×39. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity,...

Retail: $189.99

Was:

Now: $179.99

Add to Cart
Aero Precision

Aero Precision 5.56 Bolt Carrier Group, Complete (No Logo) - Nickel Boron

Our upgraded nickel boron bolt carrier group is an eye catching addition to your AR build. Mil-spec dimensions and coating ensure the highest quality and correct component interface. Features and Specifications: No Aero 'A' Logo Machined from 8620...

Retail: $184.99

Was:

Now: $159.99

Add to Cart
Spike's Tactical

Spike's Tactical Complete Lightweight Nickel Boron Bolt Carrier Group

Features and Specifications: Complete Nickel Boron M-16 BCG Nickel Boron Coating Inside and Out (Bolt, Carrier, and Gas Key) Laser Engraved with ST Spider logo Mil Spec Carrier 8620 Tool Steel Full Auto M-16 Holes for Reduced Weight...

Retail: $250.00

Was:

Now: $229.99

Add to Cart
FailZero

FailZero M16/M4 Bolt Carrier Group, No Hammer, Black Nitride Coated, Black Finish

This BCG is designed for shooters looking for a tactical advantage resulting from the non-reflective properties of Black Nitride.The carrier comes with a Black Nitride finish for great corrosion protection and wear resistance.This Bolt Carrier Group...

Retail: $119.99

Was:

Now: $109.99

Add to Cart
FailZero

FailZero 5.56/.223 Bolt Assembly, EXO Nickel Boron Coated

This fully assembled and NiB coated (5.56/.223) bolt assembly is compatible with most mil spec AR15, M16, M4 Carriers. EXO Nickel Boron provides permanent dry lubricity; increased wear and corrosion resistance. By reducing friction this bolt assembly...

Retail: $85.00

Was:

Now: $82.95

Add to Cart
Aero Precision

Aero Precision 5.56 PRO Series Bolt Carrier Group, Complete (with Logo) - Black Nitride

The Aero Precision PRO 5.56 Bolt Carrier Group is built from the ground up to meet the demands of the most extreme conditions. Each component and manufacturing process of the PRO 5.56 Bolt Carrier Group was deliberately chosen to increase the reliable...

Retail: $174.99

Was:

Now: $159.99

Add to Cart
FailZero

FailZero AR-15 Bolt Carrier Group, EXO Nickel Boron Coated, Black Finish

This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and...

Retail: $179.99

Was:

Now: $159.99

Add to Cart
LANTAC

LANTAC M-SPEC® 5.56/.223 BCG

Lantac M-SPEC® - Above Mil Spec.Not every customer has the requirement or budget for a fully enhanced, top of the line AR15 accessory. Many users simply need a quality milspec component supplied at a sensible price.M-SPEC® is a range of AR15...

Retail: $189.99

Was:

Now: $179.99

Add to Cart
CMC Triggers

CMC Triggers, Suppressor Optimized, Enhanced Bolt Carrier Group, Black Nitride, 5.56/223/300BLK

CMC Triggers Enhanced Bolt Carrier Group was designed for shooters who demand superior performance weapon components in the heart of their firearm. CMC proudly manufactures the highest quality firearms components in the industry.Carrier Assembly: The...

Retail:

Was:

Now: $199.99

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LBE Unlimited

LBE Unlimited, AR Bolt Kit, Includes Bolt, Firing Pin, Cam Pin, and Retaining Pin

The LBE AR Bolt Kit includes the bolt, firing pin, cam pin and firing pin retaining pin. Features and Specifications: Fits AR-15 158 Carpenter Steel Bolt Made in the USA

Retail: $69.99

Was:

Now: $64.99

Add to Cart
Sale

Battle Arms Development

BATTLEARMS Development AR15/M16 Full Auto BCG Bolt Carrier Group

The best just got better! From the inventors of the very first fully modular, patented, ambidextrous safety selector for the AR-15 platform, Battle Arms Development is raising the bar on reliability and compatibility of hard-use MSR components. Features...

Retail: $145.00

Was: $145.00

Now: $139.99

Add to Cart
Aero Precision

Aero Precision 5.56 Bolt Carrier Group, Complete (with Logo) - Black Nitride

This high quality AR-15 bolt carrier group is a valuable addition to your next build. BCG has a black nitride coating and with the Aero logo.Features and Specifications: M16-cut carrier Machined from 8620 Tool Steel (Carrier) and 9310 Steel...

Retail: $149.99

Was:

Now: $134.99

Add to Cart
FailZero

FailZero, Lightweight Bolt Carrier Group, EXO Nickel Boron Coated, Nickel Finish

This FZ Lightweight BCG runs as great as it looks! Like all FailZero products it is easier to clean and maintain, and guaranteed for life. This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR15...

Retail: $234.99

Was:

Now: $209.99

Add to Cart
2A Armament

2A Armament Titanium Regulated Bolt Carrier Group, AR Platfrom, Black Nitride Finish

The Titanium Regulated Bolt Carrier (RBC) is an ultra-lightweight carrier with a gas regulating gate built into the carrier itself. This provides a drop in, extremely lightweight solution for those looking to tune their AR-15's gas system and minimize...

Retail: $548.33

Was:

Now: $504.46

Out of stock