Menu
Close
Search
Search Log In Help Center
View Cart
Daily Deals
Clearance
Close
Daily Deals
Clearance
My Account
Help Center

AR-15 300 Blackout Barrels

At Palmetto State Armory, you can find the best in AR-15 barrels chambered in 300 Blackout to finish off your dream build. We offer barrels from less than 10.5" to 16" to suit your build specs from brands such as Palmetto State Armory, Ballistic Advantage, FNH, and more. To match your barrel, check out our selection of AR-15 gas blocks, rails, and AR-15 muzzle devices. 

View as Grid View List View

Items 1-24 of 66

Page
Set Descending Direction
  1. Diamondback Pistol-Length Medium Profile Barrel .300 AAC Blackout 10.50", Black

    Diamondback Pistol-Length Medium Profile Barrel .300 AAC Blackout 10.50", Black

    Regular Price $87.99 Special Price $78.99
    Add to Wish List Add to Compare
  2. Faxon Firearms Match Gunner 5R Button Rifled Barrel .300 AAC Blackout 9", Black

    Faxon Firearms Match Gunner 5R Button Rifled Barrel .300 AAC Blackout 9", Black

    $166.99
    Add to Wish List Add to Compare
  3. Faxon Firearms Gunner Button Rifled Barrel .300 AAC Blackout 10.50", Black

    Faxon Firearms Gunner Button Rifled Barrel .300 AAC Blackout 10.50", Black

    $180.99
    Add to Wish List Add to Compare
  4. Faxon Firearms Match Barrel .300 AAC Blackout 7.50", Black - Optimal Performance - 15B35P7NGQ5RNP3

    Faxon Firearms Match Barrel .300 AAC Blackout 7.50", Black - Optimal Performance - 15B35P7NGQ5RNP3

    Regular Price $189.99 Special Price $170.99
    Add to Wish List Add to Compare
  5. Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 300P85H50B8R

    Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 300P85H50B8R

    Rating:
    100%
    (3)
    $65.00
    Add to Wish List Add to Compare
  6. Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 300P16H50B8R

    Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 300P16H50B8R

    Regular Price $93.99 Special Price $88.99
    Add to Wish List Add to Compare
  7. Proof Research AR-Type Barrel 12.50" for AR-Style, Natural - 100523

    Proof Research AR-Type Barrel 12.50" for AR-Style, Natural - 100523

    $899.00
    Add to Wish List Add to Compare
  8. Rosco Bloodline 11.5" Barrel, 5.56x45mm - SPBL115556BCGGTCNGB001

    Rosco Bloodline 11.5" Barrel, 5.56x45mm - SPBL115556BCGGTCNGB001

    Regular Price $300.99 Special Price $270.99
    Add to Wish List Add to Compare
  9. Rosco Bloodline 12.5" Barrel, 5.56x45mm - SPBL125556BCGGTCNGB001

    Rosco Bloodline 12.5" Barrel, 5.56x45mm - SPBL125556BCGGTCNGB001

    Regular Price $305.99 Special Price $274.99
    Add to Wish List Add to Compare
  10. Rosco Bloodline AR-15 16" 300 Blackout Heavy Barrel, 1:8 Twist - BL16HB300BLK8P

    Rosco Bloodline AR-15 16" 300 Blackout Heavy Barrel, 1:8 Twist - BL16HB300BLK8P

    $178.20
    Add to Wish List Add to Compare
  11. Rosco Bloodline Barrel 300 Blackout 10.5" Black 1:7 Heavy Profile - BL105HB300BLK7P

    Rosco Bloodline Barrel 300 Blackout 10.5" Black 1:7 Heavy Profile - BL105HB300BLK7P

    Regular Price $173.99 Special Price $157.99
    Add to Wish List Add to Compare
  12. Diamondback Firearms 300 Blackout 10" Black 1:8 Pistol Length Gas System 300P10H50B8R

    Diamondback Firearms 300 Blackout 10" Black 1:8 Pistol Length Gas System 300P10H50B8R

    Rating:
    20%
    (1)
    $73.00
    Add to Wish List Add to Compare
  13. Ballistic Advantage Performance Series Barrel 300 Blackout 10.3" Black Gas Block

    Ballistic Advantage Performance Series Barrel 300 Blackout 10.3" Black Gas Block

    $209.00
    Add to Wish List Add to Compare
  14. Q 300 Blackout Light Profile 7" 1:5 Twist Barrel for Honey Badger - BARRELHB3007

    Q 300 Blackout Light Profile 7" 1:5 Twist Barrel for Honey Badger - BARRELHB3007

    Regular Price $443.99 Special Price $399.99
    Add to Wish List Add to Compare
  15. Ballistic Advantage Modern Series .300 Blackout 8" Threaded Barrel, QPQ Corrosion Resistant - BABL300001M

    Ballistic Advantage Modern Series .300 Blackout 8" Threaded Barrel, QPQ Corrosion Resistant - BABL300001M

    Rating:
    60%
    (1)
    Regular Price $116.99 Special Price $105.99
    Add to Wish List Add to Compare
  16. Wilson Combat .300 Blackout 16" Match Grade 6 Groove Barrel, Matte Bead Blasted Stainless - TR-300RCPG16RT7

    Wilson Combat .300 Blackout 16" Match Grade 6 Groove Barrel, Matte Bead Blasted Stainless - TR-300RCPG16RT7

    Regular Price $348.99 Special Price $257.99
    Add to Wish List Add to Compare
  17. Wilson Combat .300 Blackout 8" Match Grade 6 Groove Barrel, Matte Bead Blasted Stainless - TR-300SBRPG8RT7

    Wilson Combat .300 Blackout 8" Match Grade 6 Groove Barrel, Matte Bead Blasted Stainless - TR-300SBRPG8RT7

    Regular Price $263.99 Special Price $236.99
    Add to Wish List Add to Compare
  18. Ballistic Advantage AR-15 Barrel .300 Blackout 8.3" Pistol-Length, QPQ - BABL300002F

    Ballistic Advantage AR-15 Barrel .300 Blackout 8.3" Pistol-Length, QPQ - BABL300002F

    Rating:
    100%
    (1)
    $199.55
    Add to Wish List Add to Compare
  19. Ballistic Advantage Modern AR-15 .300 Blackout 16" Pistol-Length, QPQ

    Ballistic Advantage Modern AR-15 .300 Blackout 16" Pistol-Length, QPQ

    Regular Price $190.99 Special Price $171.99
    Add to Wish List Add to Compare
  20. CMMG .300 Blackout 8" Medium Taper Barrel Sub-Assembly, Salt Bath Nitride Black - 30D810A

    CMMG .300 Blackout 8" Medium Taper Barrel Sub-Assembly, Salt Bath Nitride Black - 30D810A

    Regular Price $167.99 Special Price $159.99
    Add to Wish List Add to Compare
  21. CMMG .300 Blackout 16.1" Medium Taper Barrel Sub-Assembly, Bead Blast - 30DC30A

    CMMG .300 Blackout 16.1" Medium Taper Barrel Sub-Assembly, Bead Blast - 30DC30A

    Regular Price $193.99 Special Price $173.99
    Add to Wish List Add to Compare
  22. CMMG .300 Blackout 16.1" Medium Taper Barrel Sub-Assembly, Salt Bath Nitride Black - 30D120A

    CMMG .300 Blackout 16.1" Medium Taper Barrel Sub-Assembly, Salt Bath Nitride Black - 30D120A

    Regular Price $186.99 Special Price $167.99
    Add to Wish List Add to Compare
  23. CMMG .300 Blackout 16.1" Multi Role Barrel Sub-Assembly, Salt Bath Nitride Black - 30DF80A

    CMMG .300 Blackout 16.1" Multi Role Barrel Sub-Assembly, Salt Bath Nitride Black - 30DF80A

    Regular Price $186.99 Special Price $167.99
    Add to Wish List Add to Compare
  24. PSA AR-15 Barrel 7.5" .300 Blackout Pistol-Length 1:7 Nitride - 5165449963

    PSA AR-15 Barrel 7.5" .300 Blackout Pistol-Length 1:7 Nitride - 5165449963

    Rating:
    91%
    (7)
    $79.99
    Add to Wish List Add to Compare
View as Grid View List View

Items 1-24 of 66

Page
Set Descending Direction
Shop By
Shopping Options
Stock
Barrel Length
Preferred Vendor
Caliber
Brand
Price
Apply

Looking for something more specific?

shop psa products
shop psa aac ammo
shop magpul products
shop glock products
shop sig sauer
shop smith and wesson