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KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group Up to 10% Off — Free 2 Day Shipping w/ code 2DAYAIR — 8 models

Special offer available for this product. Click here to see!
KAK K-SPEC Low Mass AR15 Bolt Carrier Group, Dual Ejectors, Down Vent, Sand Cuts, 303-0502-011
KAK K-SPEC Low Mass AR15 Bolt Carrier Group, Dual Ejectors, Down Vent, Sand Cuts, 303-0502-011
KAK Industry K-SPEC Enhanced Bolt Carrier Group AR-15, 5.56/ 300 Blackout, Dual Ejector, Down Vent, Sand Cuts, Black, Phosphate, 425-0512-003
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, Phosphate, Black, 425-0512-003
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, C158 Steel, Phosphate, Black, 425-3312-001
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, PVD, Flat Dark Earth, 425-0507-003
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, Chrome, Silver, 425-0505-002
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, Hard Chrome, Silver, 425-0505-003
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, NP3, Silver, 425-0506-003
KAK K-SPEC Low Mass AR15 Bolt Carrier Group, Dual Ejectors, Down Vent, Sand Cuts, Anodize and NP3, 425-0510-002
KAK K-SPEC Low Mass AR15 Bolt Carrier Group, Dual Ejectors, Down Vent, Sand Cuts, 303-0502-011
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KAK K-SPEC Low Mass AR15 Bolt Carrier Group, Dual Ejectors, Down Vent, Sand Cuts, 303-0502-011
KAK K-SPEC Low Mass AR15 Bolt Carrier Group, Dual Ejectors, Down Vent, Sand Cuts, 303-0502-011
2 of 10 images
KAK K-SPEC Low Mass AR15 Bolt Carrier Group, Dual Ejectors, Down Vent, Sand Cuts, 303-0502-011
KAK Industry K-SPEC Enhanced Bolt Carrier Group AR-15, 5.56/ 300 Blackout, Dual Ejector, Down Vent, Sand Cuts, Black, Phosphate, 425-0512-003
3 of 10 images
KAK Industry K-SPEC Enhanced Bolt Carrier Group AR-15, 5.56/ 300 Blackout, Dual Ejector, Down Vent, Sand Cuts, Black, Phosphate, 425-0512-003
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, Phosphate, Black, 425-0512-003
4 of 10 images
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, Phosphate, Black, 425-0512-003
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, C158 Steel, Phosphate, Black, 425-3312-001
5 of 10 images
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, C158 Steel, Phosphate, Black, 425-3312-001
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, PVD, Flat Dark Earth, 425-0507-003
6 of 10 images
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, PVD, Flat Dark Earth, 425-0507-003
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, Chrome, Silver, 425-0505-002
7 of 10 images
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, Chrome, Silver, 425-0505-002
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, Hard Chrome, Silver, 425-0505-003
8 of 10 images
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, Hard Chrome, Silver, 425-0505-003
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, NP3, Silver, 425-0506-003
9 of 10 images
KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, NP3, Silver, 425-0506-003
KAK K-SPEC Low Mass AR15 Bolt Carrier Group, Dual Ejectors, Down Vent, Sand Cuts, Anodize and NP3, 425-0510-002
10 of 10 images
KAK K-SPEC Low Mass AR15 Bolt Carrier Group, Dual Ejectors, Down Vent, Sand Cuts, Anodize and NP3, 425-0510-002

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Questions & Answers
The weight of this bcg was never stated so would like to know. Expert Answer

The KAK K-SPEC Low Mass AR15 BCG weighs 6.2 oz.

by Ethan, Gear Expert, April 9, 2025
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Negative Review
Don't buy the Nitride Finish by shep, Verified Owner, December 25, 2025
The coating is so bad that it's essentially a sandpaper-coated BCG. The coating is also not applied adequately on the gas key. I don't have to tools to check if it's out of spec but it's the only BCG I've ever had to use the Forward Assist on straig...
Read More...
1/1 found this helpful
Read 1 Review

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Product Info for KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group

The K-SPEC BCG combines multiple key features focused on increasing the reliability of your AR-15 style firearm no matter if you are running suppressed or unsuppressed, and regardless of conditions. The K-SPEC is a truly plug and play BCG that will accommodate whatever configuration your mission requires.image

Specifications for KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group:

Manufacturer: KAK Industry
Bolt Material: 9310 Steel
Caliber: 5.56mm, .300 AAC Blackout
Gun Make: AR Platform
Gun Model: AR-15
Hand: Right
Condition: New

Features of KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group

  • Dual Ejectors
  • Angled Carrier Rail Cuts
  • Downward Gas Ports
  • Full Auto Profile
  • Full Chrome

Package Contents:

  • KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group

What firearm models does the manufacturer say KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group is compatible with?

The manufacturer suggests that KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group is compatible with AR-15

KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group Orderable Models

List of Orderable Models

  • KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, PVD, Flat Dark Earth, 425-0507-003 , MPN: 425-0507-003 , UPC: 811163035699 , Code: 3KE-BCG-K-SPEC-425-0507-003
  • KAK K-SPEC Low Mass AR15 BCG, Dual Ejectors, Down Vent, Sand Cuts , MPN: 303-0502-011 , UPC: 811163035743 , Code: 3KE-BCG-K-SPEC-303-0502-011
  • KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, Phosphate, Black, 425-0512-003 , MPN: 425-0512-003 , UPC: 811163034982 , Code: 3KE-BCG-K-SPEC-425-0512-003
  • KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, C158 Steel, Phosphate, Black, 425-3312-001 , MPN: 425-3312-001 , Code: 3KE-BCG-K-SPEC-425-3312-001
  • KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, Chrome, Silver, 425-0505-002 , MPN: 425-0505-002 , Code: 3KE-BCG-K-SPEC-425-0505-002
  • KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, NP3, Silver, 425-0506-003 , MPN: 425-0506-003 , Code: 3KE-BCG-K-SPEC-425-0506-003
  • KAK K-SPEC Low Mass AR15 BCG, Dual Ejectors, Down Vent, Sand Cuts, Anodize and NP3, 425-0510-002 , MPN: 425-0510-002 , UPC: 811163036061 , Code: 3KE-BCG-K-SPEC-425-0510-002
  • KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, Hard Chrome, Silver, 425-0505-003 , MPN: 425-0505-003 , UPC: 811163035088 , Code: 3KE-BCG-K-SPEC-425-0505-003

KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group Unavailable & Discontinued Models

List of Unorderable Models

  • USED, KAK Industry K-SPEC Enhanced AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group, 9310 Steel, Chrome, Silver, 425-0505-002 , MPN: 425-0505-002-EDEMO , Code: 3KE-BCG-K-SPEC-425-0505-002-EDEMO-IN-D
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