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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 73-96 of 460

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  1. Proof Research 18" Natural AR-Type Barrel - Optimal Precision and Performance - 100028

    Proof Research 18" Natural AR-Type Barrel - Optimal Precision and Performance - 100028

    Regular Price $1,270.99 Special Price $939.99
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  2. Odin AR-15 300 Blackout 6.1" Threaded Barrel - B30016PTGBLK

    Odin AR-15 300 Blackout 6.1" Threaded Barrel - B30016PTGBLK

    Regular Price $360.99 Special Price $327.99
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  3. Seekins Precision .223 Wylde 18" Barrel, 1:8 Twist - 10120021

    Seekins Precision .223 Wylde 18" Barrel, 1:8 Twist - 10120021

    $395.99
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  4. Seekins Precision .223 Wylde 16" Barrel, 1:8 Twist - 10120017

    Seekins Precision .223 Wylde 16" Barrel, 1:8 Twist - 10120017

    $395.99
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  5. Q Barrel, Light Profile, 16", 1:3 Twist, 8.6 Blackout, fits Q Fix, Matte Stainless Finish, Gray

    Q Barrel, Light Profile, 16", 1:3 Twist, 8.6 Blackout, fits Q Fix, Matte Stainless Finish, Gray

    Regular Price $459.99 Special Price $459.00
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  6. Q Barrel, Light Profile, 12", 1:3 Twist, 8.6 Blackout, fits Q Fix, Matte Stainless Finish, Gray

    Q Barrel, Light Profile, 12", 1:3 Twist, 8.6 Blackout, fits Q Fix, Matte Stainless Finish, Gray

    Regular Price $459.99 Special Price $459.00
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  7. FN America AR-15 16" Barrel 1:7 Twist Button Broached, Black - 20100046

    FN America AR-15 16" Barrel 1:7 Twist Button Broached, Black - 20100046

    Regular Price $407.39 Special Price $290.99
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  8. FN Barrel 556NATO 14.5" Black Hammer Forged Carbine AR Rifles

    FN Barrel 556NATO 14.5" Black Hammer Forged Carbine AR Rifles

    Regular Price $472.99 Special Price $349.99
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  9. FN Barrel 556NATO 14.7" Black Hammer Forged Carbine AR Rifles

    FN Barrel 556NATO 14.7" Black Hammer Forged Carbine AR Rifles

    Regular Price $530.59 Special Price $378.99
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  10. FN America AR-15 16" Barrel 1:7 Twist Button Broached, Black - 20100041

    FN America AR-15 16" Barrel 1:7 Twist Button Broached, Black - 20100041

    Regular Price $378.99 Special Price $279.99
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  11. FN America AR-15 18" Barrel 1:7 Twist Button Broached, Black - 20100042

    FN America AR-15 18" Barrel 1:7 Twist Button Broached, Black - 20100042

    Regular Price $378.99 Special Price $279.99
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  12. FN America AR-15 16" Barrel 556NATO 1:7 Twist Button Broached, Black - 20100039

    FN America AR-15 16" Barrel 556NATO 1:7 Twist Button Broached, Black - 20100039

    Regular Price $299.00 Special Price $279.00
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  13. Wilson Combat Super Sniper, Fluted, 308 Winchester, 1:10 Twist, Glass Bead Finish, Stainless

    Wilson Combat Super Sniper, Fluted, 308 Winchester, 1:10 Twist, Glass Bead Finish, Stainless

    $344.99
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  14. Diamondback Firearms AR-10 308 Win 16" 1:10 Twist Barrel, Black Nitride Finish - 308R18M50B10R

    Diamondback Firearms AR-10 308 Win 16" 1:10 Twist Barrel, Black Nitride Finish - 308R18M50B10R

    Regular Price $156.79 Special Price $111.99
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  15. Rosco Bloodline AR-15 16" 556 Heavy Barrel, 1:7 Twist - BL16HB5567C

    Rosco Bloodline AR-15 16" 556 Heavy Barrel, 1:7 Twist - BL16HB5567C

    $167.40
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  16. Diamondback Firearms AR-10 308 Win 16" 1:10 Twist Barrel, Black Nitride Finish - 308M16L50B10R

    Diamondback Firearms AR-10 308 Win 16" 1:10 Twist Barrel, Black Nitride Finish - 308M16L50B10R

    Regular Price $132.99 Special Price $114.99
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  17. Diamondback Firearms 308 Winchester 13.5" Black 1:10 Mid Length Gas System 308M135M50B10R

    Diamondback Firearms 308 Winchester 13.5" Black 1:10 Mid Length Gas System 308M135M50B10R

    $109.00
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  18. Rosco Manufacturing Purebred Barrel, 223WYLDE, 16", Bead Blasted Finish, 1:8 Twist, 1/2x28, 416R

    Rosco Manufacturing Purebred Barrel, 223WYLDE, 16", Bead Blasted Finish, 1:8 Twist, 1/2x28, 416R

    $198.90
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  19. Diamondback Firearms AR-15 Barrel, 6.5 Grendel 18" 1:8 Twist, Black Nitride Finish - 65M18M50B8R

    Diamondback Firearms AR-15 Barrel, 6.5 Grendel 18" 1:8 Twist, Black Nitride Finish - 65M18M50B8R

    Regular Price $127.99 Special Price $109.99
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  20. Diamondback Firearms AR-15 Barrel, 223 Wylde 18" 1:7 Twist, Black Nitride Finish - 223WM18M50B7R

    Diamondback Firearms AR-15 Barrel, 223 Wylde 18" 1:7 Twist, Black Nitride Finish - 223WM18M50B7R

    Regular Price $99.99 Special Price $86.99
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  21. CMMG MKGS Barrel 9mm 5" Black 1:9 AR Rifles - 99D17C3

    CMMG MKGS Barrel 9mm 5" Black 1:9 AR Rifles - 99D17C3

    Regular Price $463.99 Special Price $440.99
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  22. 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

    $73.00
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  23. Diamondback Firearms 223 Remington 556NATO 10" Black 1:8 Carbine Length Gas System 556C10M50B8R

    Diamondback Firearms 223 Remington 556NATO 10" Black 1:8 Carbine Length Gas System 556C10M50B8R

    $74.00
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  24. Radical Firearms Barrel, Socom Profile, Mid-Length Gas System, 223 Rem/556NATO, 16", 1:7 Twist

    Radical Firearms Barrel, Socom Profile, Mid-Length Gas System, 223 Rem/556NATO, 16", 1:7 Twist

    Regular Price $243.99 Special Price $179.99
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  1. 5.56 Barrels 196
  2. 6.8mm Barrels 2
  3. 300 Blackout Barrels 56
  4. .458 SOCOM Barrels 1
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