Shop Big Savings & Exclusive Offers
During the Bench Revival Sale - Save Now!

Shop Big Savings & Exclusive Offers
During the Bench Revival Sale - Save Now!

Daily Deal: Vortex AMG 1-10x Scope w/ EBR9 MRAD $3,999.99 $3,399.99 - Get Yours! 

4230 Site Banners - Brownells BCG_Dekstop
4230 Site Banners - Brownells BCG_MobileV2

No - They're Not Another
Run-Of-The-Mill BCG

See What Sets The Brownells BCG Apart!
Learn More
JP-Silent-Capture-Spring-CP-Hero-1920x385
JP-Silent-Capture-Spring-CP-Hero-768x450

Looking For The Most Impactful AR Upgrade?

JP SILENT CAPTURED SPRING

Upgrade Your AR
6294 Brownells Banners - Week 11 - Category Header_Geissele
6294 Brownells Banners - Week 11 - Category Header_Geissele Mobile

THE GOLD STANDARD
OF AR UPGRADES!

Shop Geissele Uppers,
Triggers, and Upgrades!
Upgrade Now!
3771-KAK-K-Spec-BCGs-CP-Hero-1920x385
3771-KAK-K-Spec-BCGs-CP-Hero-768x450

TIRED OF GETTING A FACEFUL OF BLOWBACK?

KAK K-Spec Down Vent BCG Vents Gasses Away From
The Shooter Perfect For Overgassed & Suppressed Guns

Get Yours
6275 Brownells Banner - New product - _Category Header
6275 Brownells Banner - New product - _Category Header Mobile

SMALLER.
LIGHTER.
STRONGER.

Check-Out The New
Law Folder Gen S!
Take A Look
4509 Site Banners - BRN180 Gen-3 Launch_Category Hero
4509 Site Banners - BRN180 Gen-3 Launch_Category Hero Mobile(1)

BROWNELLS BRN-180® GEN3

You've Been Waiting - Don't Miss Out Again!
Back In Stock!

Bolt Carrier Groups 52 Items

Bolt Carrier Groups — 52 Products In Stock / 6 Models

Our Bolt Carrier Groups selection features 52 in-stock products including from 27 premium brands including BROWNELLS, KAK INDUSTRY LLC., & FAXON FIREARMS.  Browse our full selction of Rifle Bolts & Bolt Carrier Groups.

Sort by:
52 Total Products
You're viewing results for:
Products:  1  –  32  of 79
Number of results: 
  • 32
  • 64
  • 96
DANIEL DEFENSE - M16 5.56 BOLT CARRIER GROUP DANIEL DEFENSE - M16 5.56 BOLT CARRIER GROUP
5 Stars
(4.9)

$247.00

In stock
CMMG - AR-15/M16 22LR BRAVO CONVERSION KITS CMMG - AR-15/M16 22LR BRAVO CONVERSION KITS
5 Stars
(4.5)

$184.99 - $259.95

Select Items In Stock
BROWNELLS - M16 5.56 BOLT CARRIER GROUP NICKEL BORON MP BROWNELLS - M16 5.56 BOLT CARRIER GROUP NICKEL BORON MP
5 Stars
(3.4)

$135.99

In stock
BRAVO COMPANY - M16 5.56 BOLT CARRIER GROUP BRAVO COMPANY - M16 5.56 BOLT CARRIER GROUP
5 Stars
(4.4)

$211.26 - $225.00

In stock
BROWNELLS - M16 7.62X39 BOLT CARRIER GROUP NITRIDE MP BROWNELLS - M16 7.62X39 BOLT CARRIER GROUP NITRIDE MP
5 Stars
(4.7)

$116.99

In stock
Product badge RISE ARMAMENT - M16 BOLT CARRIER GROUP NICKEL BORON RISE ARMAMENT - M16 BOLT CARRIER GROUP NICKEL BORON
5 Stars
(5.0)

$143.99

$179.99

In stock
BROWNELLS - 308AR BOLT CARRIER GROUPS BROWNELLS - 308AR BOLT CARRIER GROUPS
5 Stars
(4.3)

$158.99 - $177.99

In stock
KAK INDUSTRY LLC. - K-SPEC M16 5.56X45MM NATO BOLT CARRIER GROUP KAK INDUSTRY LLC. - K-SPEC M16 5.56X45MM NATO BOLT CARRIER GROUP
5 Stars
(4.0)

$179.99 - $219.99

Select Items In Stock
J P ENTERPRISES - AR-15 6.5 GRENDEL/ 6MM ARC FULL MASS BOLT CARRIER GROUP J P ENTERPRISES - AR-15 6.5 GRENDEL/ 6MM ARC FULL MASS BOLT CARRIER GROUP
5 Stars
(0.0)

$375.25

In stock
FAXON FIREARMS - GEN-2 9MM BOLT CARRIER GROUP FOR GLOCK® & COLT® STYLE LOWER FAXON FIREARMS - GEN-2 9MM BOLT CARRIER GROUP FOR GLOCK® & COLT® STYLE LOWER
5 Stars
(4.8)

$165.99

In stock
LMT DEFENSE - FULL-AUTO 7.62X51 NATO BOLT CARRIER GROUP LMT DEFENSE - FULL-AUTO 7.62X51 NATO BOLT CARRIER GROUP
5 Stars
(0.0)

$575.10

In stock
KAK INDUSTRY LLC. - K-SPEC M16 5.56 NATO BOLT CARRIER GROUP W/SIDE VENT KAK INDUSTRY LLC. - K-SPEC M16 5.56 NATO BOLT CARRIER GROUP W/SIDE VENT
5 Stars
(4.0)

$179.99 - $219.99

In stock
FAXON FIREARMS - 5.56X45 NATO LIGHTWEIGHT MIL-SPEC BOLT CARRIER GROUP FOR AR15 FAXON FIREARMS - 5.56X45 NATO LIGHTWEIGHT MIL-SPEC BOLT CARRIER GROUP FOR AR15
5 Stars
(3.3)

$229.08 - $275.08

In stock
Product badge LMT DEFENSE - AR-15 BOLT CARRIER GROUP LMT DEFENSE - AR-15 BOLT CARRIER GROUP
5 Stars
(0.0)

$249.75 - $304.20

In stock
FAXON FIREARMS - 5.56X45MM NATO MIL-SPEC BOLT CARRIER GROUP FOR AR-15/M16 FAXON FIREARMS - 5.56X45MM NATO MIL-SPEC BOLT CARRIER GROUP FOR AR-15/M16
5 Stars
(3.0)

$133.40 - $183.08

Select Items In Stock
KAK INDUSTRY LLC. - M16 .224 VALKYRIE /6.8 SPECIAL BOLT CARRIER GROUP KAK INDUSTRY LLC. - M16 .224 VALKYRIE /6.8 SPECIAL BOLT CARRIER GROUP
5 Stars
(0.0)

$116.92

In stock
BROWNELLS - AR-15 9MM BOLT ASSEMBLY FOR GLOCK BROWNELLS - AR-15 9MM BOLT ASSEMBLY FOR GLOCK
5 Stars
(3.3)

$96.99

In stock
SPIKES TACTICAL - M16 5.56 BOLT CARRIER GROUP SPIKES TACTICAL - M16 5.56 BOLT CARRIER GROUP
5 Stars
(3.4)

$144.99

In stock
WILSON COMBAT - AR .308 BOLT CARRIER ASSEMBLY WILSON COMBAT - AR .308 BOLT CARRIER ASSEMBLY
5 Stars
(4.0)

$308.95

In stock
ODIN WORKS INC. - 6.5 GRENDEL TYPE 2 BOLT CARRIER GROUP ODIN WORKS INC. - 6.5 GRENDEL TYPE 2 BOLT CARRIER GROUP
5 Stars
(5.0)

$141.55

In stock
ODIN WORKS INC. - AR-15 BOLT CARRIER GROUP ODIN WORKS INC. - AR-15 BOLT CARRIER GROUP
5 Stars
(4.0)

$122.99

In stock
KAK INDUSTRY LLC. - M16 5.56X45MM NATO BOLT CARRIER GROUP KAK INDUSTRY LLC. - M16 5.56X45MM NATO BOLT CARRIER GROUP
5 Stars
(2.0)

$116.99

In stock
KAK INDUSTRY LLC. - K-SPEC M16 .224 VALKYRIE /6.8 SPECIAL BOLT CARRIER GROUP KAK INDUSTRY LLC. - K-SPEC M16 .224 VALKYRIE /6.8 SPECIAL BOLT CARRIER GROUP
5 Stars
(0.0)

$179.99

In stock
KAK INDUSTRY LLC. - K-SPEC M16 6.5MM GRENDEL TYPE 2 BOLT CARRIER GROUP KAK INDUSTRY LLC. - K-SPEC M16 6.5MM GRENDEL TYPE 2 BOLT CARRIER GROUP
5 Stars
(0.0)

$179.99

In stock
KAK INDUSTRY LLC. - K-SPEC M16 7.62X39MM BOLT CARRIER GROUP KAK INDUSTRY LLC. - K-SPEC M16 7.62X39MM BOLT CARRIER GROUP
5 Stars
(0.0)

$179.99

In stock
KAK INDUSTRY LLC. - M16 7.62X39MM BOLT CARRIER GROUP KAK INDUSTRY LLC. - M16 7.62X39MM BOLT CARRIER GROUP
5 Stars
(0.0)

$125.99

In stock
KAK INDUSTRY LLC. - M16 6.5MM GRENDEL TYPE 2 BOLT CARRIER GROUP KAK INDUSTRY LLC. - M16 6.5MM GRENDEL TYPE 2 BOLT CARRIER GROUP
5 Stars
(0.0)

$116.92

In stock
LAW TACTICAL LLC - ARIC INTERNAL CARRIERS FOR AR-15 LAW TACTICAL LLC - ARIC INTERNAL CARRIERS FOR AR-15
5 Stars
(3.9)

$396.99 - $419.00

In stock
BROWNELLS - 308 AR TITANIUM BOLT CARRIER GROUP DLC BROWNELLS - 308 AR TITANIUM BOLT CARRIER GROUP DLC
5 Stars
(4.0)

$312.99

In stock
FAXON FIREARMS - 6.5 GRENDEL/6MM ARC TYPE 2 BOLT CARRIER GROUP FOR AR-15/M16 FAXON FIREARMS - 6.5 GRENDEL/6MM ARC TYPE 2 BOLT CARRIER GROUP FOR AR-15/M16
5 Stars
(3.6)

$151.80

In stock
WILSON COMBAT - AR-15 BOLT CARRIER ASSEMBLY 5.56 NATO WILSON COMBAT - AR-15 BOLT CARRIER ASSEMBLY 5.56 NATO
5 Stars
(5.0)

$185.95 - $216.95

In stock
J P ENTERPRISES - AR-15 5.56 FULL MASS BOLT CARRIER GROUP J P ENTERPRISES - AR-15 5.56 FULL MASS BOLT CARRIER GROUP
5 Stars
(5.0)

$356.25

In stock
Products:  1  –  32  of 79