300 Blackout Barrels

About 5% of the AR-15 barrels we track are 300 Blackout — around 300 listings across 30+ retailers. Most are pistol or carbine — pistol alone accounts for roughly 49%. Most run a 16 barrel length. Ballistic Advantage leads the category. The average listing runs around $450, priced live across every retailer we track — so it reflects today, not whenever an article was published.

Prices checked Oct 10, 2026 · refreshed daily

• Faxon FirearmsFaxon Firearms 300 Aac Blackout 1-8 Twist 10.5" Barrel$122.99
• Wilson CombatWilson Combat .300 Blackout 8" Match Grade 6 Groove Barrel, Matte Bead Blasted Stainless - TR-300SBRPG8RT7$212.51
• Wilson CombatWilson Combat Recon Barrel 300blk 16 Fluted Pistol Gas Stainless 1-7$246.49
• Griffin ArmamentGriffin Armament .300 Blackout Hedp Ar-15 Barrel - 9.5"$246.95
• Wilson CombatWilson Combat .300 Blackout 16" Match Grade 6 Groove Barrel, Matte Bead Blasted Stainless - TR-300RCPG16RT7$230.97
• CMMGCMMG .300 Blackout 16.1" Medium Taper Barrel Sub-Assembly, Salt Bath Nitride Black - 30D120A$149.85
• Ballistic AdvantageBA Products Hanson CMV .300 AAC Blackout 8.3-in Barrel$146.42
• CMMGCmmg Ar15 8.2" 300blk Mr Barrel$132.54
• DiamondbackDiamondback Firearms .300 Blackout Ar-15 Barrel Nitride - 8.5"$72.00
• Faxon FirearmsFaxon Firearms Duty 300 Black Threaded Barrel 10.5inch Pistol Length 1-8 Twist 5/8x24 Mag Phosphate Mag Phosphate$184.00
• Faxon FirearmsFaxon Firearms 300 Aac Blackout 1-8 Twist 7.5" Barrel$134.99
• Odin WorksOdin Works 300 Blk Ar-15 Barrel 1:8 Carbine Length Medium Contour 16.1" w/Gas Block$273.50
• Ballistic AdvantageBallistic Advantage Modern Series 8" .300 Blackout AR-15 Barrel, Pistol Length Gas System, 1:7 Twist - BABL300001M$86.09
• Faxon FirearmsFaxon Firearms 300 Aac Blackout 1-8 Twist 16" Barrel$129.99
• DiamondbackDiamondback Firearms Barrel - Black, Unleash Precision and Performance - 300P16H50B8R$94.00
• Faxon FirearmsFaxon Firearms 6" 300 BLK Match Gunner Barrel 1:5 Twist Nitride$170.20
• Proof ResearchProof Research Barrel Carbon Fiber .300 Blackout 16 Barrel for AR15$899.00
• CMMGCmmg Ar15 12.5" 300blk Mr Barrel$170.03
• Faxon FirearmsMatch 300BLK 10.5" 1-8 Twist Gunner Contour SS BBL Nitride$162.99
• Faxon FirearmsMatch 300BLK 7.5" 1-5 Twist Gunner Contour SS BBL Nitride$144.99
• DiamondbackDiamondback DB15 Carbon Series DB1780B281 Rifle 300 Blackout 16\" Barrel 30+1 Semi-Auto B5 Multicam Furniture$583.36
• NoveskeNoveske Rifleworks 300 Aac Blackout Pistol Length Ar-15 Barrel With Gas Block - 10.5"$340.00
• Ballistic AdvantageBallistic Advantage Ar-15 Pistol Length 9 Barrel .300 Blackout$106.99
• QQ Honey Badger Barrel Assembly Copper$425.00

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