20" Barrels

About 8% of the AR-15 barrels we track are 20" — around 450 listings across 30+ retailers. The most common caliber is .308 Win, at roughly 21%. Most run a rifle-length gas system. Proof Research and Ballistic Advantage lead the category. The average listing runs around $1,110, 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 Super Sniper Barrel .223 Wylde 20 Fluted Rifle Gas 1-8$271.99
• Ballistic AdvantageBallistic Advantage Premium Series Spr 6mm Arc Ar-15 Barrel - Rifle-Length - 20"$221.23
• Ballistic AdvantageBallistic Advantage 20″ .308 Tactical Government Rifle Length AR 10 Barrel, Premium Black$196.88
• Ballistic AdvantageBallistic Advantage Premium Series AR-10 20\" .308 Winchester Heavy Barrel Rifle Length Gas System 1:10 Twist - BABL308006P$156.99
• Ballistic AdvantageBallistic Advantage Premium Series 20" 6.5 Grendel Type Ii Dmr Contour 1:8 Ar-15 Barrel - Rifle - 5/8x24$182.49
• Faxon FirearmsFaxon Firearms .350 Legend Ar-15 Barrel Gunner Profile Nitride - 20"$176.00
• Odin WorksOdin Works 20" 6.5 Grendel Rifle-Length Barrel, w/ BCG & Gas Block B-6.5-20-R-TG-BCG$432.25
• Bravo CompanyBravo Company Manufacturing Ss410 Sam-R 5.56 Nato 1:8 Stainless Rifle-Length Ar-15 Barrel - 20"$324.00
• Ballistic AdvantageBallistic Advantage Premium Black Series 6mm ARC 20 Barrel$210.16
• Faxon FirearmsFaxon Firearms Ar-15 Gunner Barrel, 20", 5.56 Nato, Rifle Length, 4150 Qpq$157.28
• Proof ResearchPROOF BBL CF BLANK BOLT .224 SENDERO 20 1-7$13.99
• Proof ResearchProof Research PR15 Stainless Steel Barrel 6mm ARC 20in Rifle+1 Length 1-7.5 Twist 5/8-24 Thread Standart 4 Groove$493.49
• Faxon FirearmsFaxon Firearms Match Series 20" 6.5 Grendel Type Ii Rifle Length Heavy Fluted Ar-15 Barrel$277.00
• Ballistic AdvantageBallistic Advantage Premium Series Threaded Barrel 6.5mm Grendel II 20in Fluted DMR Rifle 1-8 Twist 5/8x24 Thread Bead Blasted Stainless Steel$260.78
• Harrington & RichardsonHarrington & Richardson 20" M16A1 Pencil Barrel, 5.56, 1/7,Parkerized, CH Bore, Stripped$239.99
• Proof ResearchProof Research Defiance Ruckus Carbon Pre-Fit Barrels 308 Win 20in 10 Twist 5/8-24 Sendero$879.00
• Proof ResearchPROOF BBL CF BOLT 7MM BC 20 ZERMATT LA DI$980.99
• Faxon FirearmsFaxon Firearms Match Series 20" Heavy Fluted .223 Wylde Rifle-Length 416-R Stainless Nitride / Melonite 5R Nickel Teflon Extension Barrel 1:8 Twist$25.99
• Proof ResearchPROOF ELEVATION MTR 2.0 RH 308WIN 20 CF BLK$3000.99
• Proof ResearchProof Research Elevation MTR 2.0 143834 Rifle, 22 Creedmoor, 20" Carbon Fiber Barrel, Detachable Mag, TFDE, Threaded.$2903.99
• Great Lakes Firearms and AmmunitionGlfa AR10 Rifle 6.5CM 20 S S Bbl W 5R Rifling 10 Shot Black$854.99
• Proof ResearchProof Research Zermatt Arms Carbon Fiber Pre-fit Barrels 308 Win 20in Origin Short 10 Twist 5/8-24 Sendero$926.49

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