18" Barrels

About 7% of the AR-15 barrels we track are 18" — around 400 listings across 30+ retailers. The most common caliber is .223 Wylde, at roughly 21%. Most run a rifle-length gas system. Proof Research and Ballistic Advantage lead the category. The average listing runs around $740, priced live across every retailer we track — so it reflects today, not whenever an article was published.

Prices checked Oct 10, 2026 · refreshed daily

• Wilson CombatWilson Combat Recon Barrel 5.56 18 Fluted Rifle Gas Stainless 1-8$253.99
• Faxon FirearmsFaxon Firearms Match Barrel .308 Win 18", Black - Superior Precision and Reliability - 10B810R18FHQ-5R-NP3$262.68
• FN AmericaFn Ar-15 M16 Barrel 18 Rifle Length 5.56mm$236.67
• Odin WorksOdin Works .223 Wylde Ar-15 Barrel 1:8 Rifle Length 3-Gun - 18"$255.75
• Proof ResearchProof Research 6mm Arc Ar-Type Ar-15 Barrel - Rifle Length - Stainless Steel - .750" - 18"$569.00
• Odin WorksOdin Works .223 Wylde Ar-15 Barrel 1:8 Intermediate Length 3-Gun - 18" w/Gas Block$318.99
• DiamondbackDiamondback Firearms AR-15 Barrel, 6.5 Grendel 18" 1:8 Twist, Black Nitride Finish - 65M18M50B8R$113.00
• Criterion BarrelsCriterion Barrels Inc 18" Hbar Contour, Rifle Gas System, 223 Wylde$283.99
• Daniel DefenseDaniel Defense DDM4 V7 Pro 5.56mm NATO 18" 1:7" Bbl CA Compliant Rifle 02-128-16541-055$2121.99
• Ballistic AdvantageBallistic Advantage Ar-15 Modern Series 18 Rifle-Length Barrel Spr W/ Ops 12$90.16
• Odin WorksOdin Works .223 Wylde Ar-15 Barrel 1:8 Rifle Length Dmr - 18"$234.49
• FN AmericaFn 18" Chf Government Rifle, 5.56x45mm 1:7 Rh Twist$298.95
• TacFireUpgrade Your AR-10 with Tacfire's Black Nitride Barrel -Exceptional Performance - BAR308WIN110-18N$118.59
• Ballistic AdvantageAr-15 Premium Black Series 308 Winchester Rifle Barrels - 308 Win 18" 1-10 Twist Hanson Midlength Steel Bbl W/Lo Pro$205.49
• Daniel DefenseDaniel Defense MK12 Spr 5.56MM 18 Barrel 1 32RD Magazine Black Rifle$2500.99
• DiamondbackDiamondback 223WR18H50B7 223 Wylde 18\" Black QPQ Stainless Steel Barrel$84.00
• Daniel DefenseDaniel Defense DDM4 V7 Pro 5.56MM 18 Barrel 1 32RD Magazine Cobalt Rifle$2115.99
• Faxon FirearmsFaxon Firearms Ar-15 Gunner Barrel, 18", 5.56 Nato, Rifle Length, 4150 Qpq$165.89
• Daniel DefenseDaniel Defense DD5 V4-CC 7.62 x 51mm NATO 18" 1:10" Bbl CA Compliant Rifle 02-158-13210-055$2781.99
• Wilson CombatWILSON COMBAT Tactical Hunter 6mm ARC 18in Fluted Threaded Barrel 20rd Black Rifle (TH-6A18F7-BLACK)$2137.07
• Proof ResearchProof Research Barrel .260 Remington 18" Fits Sig Sauer Cross - High-Performance Barrel with Durable Black - 138946$1149.00
• Ballistic AdvantageBallistic Advantage Premium Series AR-10 18\" .308 Winchester Heavy Barrel Rifle Length Gas System 1:10 Twist - BABL308005P$194.23

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