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AR-15 Barrels & Barrel Assemblies

Find the best selection of AR 15 barrels and barrel assemblies right here at your online source for AR-15 lower parts, complete AR-15 rifles, and much more. We offer a variety of barrels from 5.56 barrels to 300 blackout barrels at prices that are hard to beat. Read our guide to barrel finishes to help you find the right barrel for your needs. Palmetto State Armory is your source for buying AR-15 parts online. 

5.56 Barrels

5.56 Barrels
6.8mm Barrels

6.8mm Barrels
300 Blackout Barrels

300 Blackout Barrels
9mm Barrels

9mm Barrels
.458 SOCOM Barrels

.458 SOCOM Barrels
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Items 121-144 of 654

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  1. Tacfire Barrel for AR-10, Black Nitride - BAR308WIN110-16N

    Tacfire Barrel for AR-10, Black Nitride - BAR308WIN110-16N

    Regular Price $138.99 Special Price $125.99
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  2. Tacfire Barrel for AR-10, Black Nitride - BAR308WIN110-20N

    Tacfire Barrel for AR-10, Black Nitride - BAR308WIN110-20N

    Regular Price $157.99 Special Price $141.99
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  3. FN America AR-15/M4 Barrel - Precision and Reliability in Stealthy Black - 20-100047

    FN America AR-15/M4 Barrel - Precision and Reliability in Stealthy Black - 20-100047

    Regular Price $388.99 Special Price $349.99
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  4. FN America AR-15/M16 Barrel - Tactical Precision in Sleek Black Finish - 20-100038

    FN America AR-15/M16 Barrel - Tactical Precision in Sleek Black Finish - 20-100038

    Regular Price $310.99 Special Price $279.99
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  5. FN America AR-15/M4 Barrel - Unleash the Power in Matte Black - 20-100044

    FN America AR-15/M4 Barrel - Unleash the Power in Matte Black - 20-100044

    Regular Price $310.99 Special Price $279.99
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  6. Diamondback Firearms New York Compliant Barrel, Black - 556C16H50B8NYR

    Diamondback Firearms New York Compliant Barrel, Black - 556C16H50B8NYR

    Rating:
    60%
    (1)
    Regular Price $96.99 Special Price $86.99
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  7. Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 762X39C10M50B95R

    Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 762X39C10M50B95R

    Regular Price $93.99 Special Price $83.99
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  8. Diamondback Firearms Barrel, Stainless - 65CR20M416SS8FR

    Diamondback Firearms Barrel, Stainless - 65CR20M416SS8FR

    Regular Price $167.99 Special Price $150.99
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  9. Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 762X39C16M50B95R

    Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 762X39C16M50B95R

    Rating:
    100%
    (1)
    Regular Price $105.99 Special Price $94.99
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  10. Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 762X39P7H50B95R

    Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 762X39P7H50B95R

    Regular Price $97.99 Special Price $87.99
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  11. Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 556C16MF50B8R

    Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 556C16MF50B8R

    Rating:
    100%
    (1)
    Regular Price $96.99 Special Price $86.99
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  12. Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 556P55H50B8R

    Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 556P55H50B8R

    Rating:
    100%
    (1)
    Regular Price $97.99 Special Price $87.99
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  13. Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 300P85H50B8R

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

    Rating:
    96%
    (5)
    Regular Price $81.99 Special Price $72.99
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  14. Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 556C16M50B8R

    Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 556C16M50B8R

    Regular Price $114.99 Special Price $102.99
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  15. Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 556P7H50B8R

    Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 556P7H50B8R

    Regular Price $94.99 Special Price $84.99
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  16. Diamondback Firearms Barrel - Black, Unleash Precision and Performance - 300P16H50B8R

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

    Rating:
    100%
    (1)
    Regular Price $105.99 Special Price $94.99
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  17. CMMG Barrel Sub Assembly for AR-15/MK4, Black - 60D100C

    CMMG Barrel Sub Assembly for AR-15/MK4, Black - 60D100C

    Regular Price $232.99 Special Price $210.99
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  18. Ballistic Advantage Modern AR-15 Barrel -Unleash Precision in Sleek Black Design - BABL556003M

    Ballistic Advantage Modern AR-15 Barrel -Unleash Precision in Sleek Black Design - BABL556003M

    Rating:
    93%
    (3)
    Regular Price $103.99 Special Price $92.99
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  19. Proof Research AR-Type Barrel 16" for AR-Style - Performance in Black - 128657

    Proof Research AR-Type Barrel 16" for AR-Style - Performance in Black - 128657

    Regular Price $1,109.99 Special Price $999.99
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  20. Ballistic Advantage Premium Barrel for AR-15, Stainless - BABL223017P

    Ballistic Advantage Premium Barrel for AR-15, Stainless - BABL223017P

    Regular Price $211.99 Special Price $190.99
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  21. Proof Research AR-Type Barrel 12.50" for AR-Style, Natural - 100523

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

    Regular Price $1,109.99 Special Price $999.99
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  22. Proof Research AR-Type Barrel 11.50" for AR-Style, Stainless - 100387

    Proof Research AR-Type Barrel 11.50" for AR-Style, Stainless - 100387

    $569.99
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  23. Proof Research AR-Type Barrel 16" for AR-Style - Stainless Steel - 128664

    Proof Research AR-Type Barrel 16" for AR-Style - Stainless Steel - 128664

    Regular Price $721.99 Special Price $649.99
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  24. Achieve Precision with Proof Research AR-Type Barrel 18" for AR-Style - Stainless Steel - 128688

    Achieve Precision with Proof Research AR-Type Barrel 18" for AR-Style - Stainless Steel - 128688

    Regular Price $721.99 Special Price $649.99
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  1. 5.56 Barrels 271
  2. 6.8mm Barrels 4
  3. 300 Blackout Barrels 73
  4. 9mm Barrels 52
  5. .458 SOCOM Barrels 3
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