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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
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
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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

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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