8" Barrels

About 1% of the AR-15 barrels we track are 8" — around 100 listings across 30+ retailers. Most are 9mm or 300 Blackout — 9mm alone accounts for roughly 28%. Most run a pistol-length gas system. CMMG and Ballistic Advantage lead the category. The average listing runs around $750, priced live across every retailer we track — so it reflects today, not whenever an article was published.

Prices checked Oct 11, 2026 · refreshed daily

• Ballistic AdvantageBallistic Advantage DRP Modern Series 5.56 AR Barrel Black 8.0 in$76.76
• Ballistic AdvantageBallistic Advantage Ar-15 Modern Series 7.5 Pistol Length Barrel$87.90
• CMMGCMMG Banshee Mk4 9mm 30rd 8" Barrel Black Pistol$1188.21
• Ballistic AdvantageBallistic Advantage Modern Series 8" .300 Blackout AR-15 Barrel, Pistol Length Gas System, 1:7 Twist - BABL300001M$86.09
• Ballistic AdvantageBallistic Advantage 8" 5.56 NATO Modern Series Barrel 1:7 Twist$110.00
• CMMGCMMG Banshee Mk4 FourSix 46A870D-AB Pistol, 4.6x30mm, 8" Barrel, 40rd, Semi-Auto, Armor Black, AR15 Controls, Optics-Ready.$1128.29
• CMMGCmmg Banshee MK57 5.7X28MM 8 Barrel Armor Black Pistol$1300.41
• Proof ResearchDefiance Ruckus Shouldered Prefit Carbon Fiber Barrels - 6.5mm Creedmoor 1-8" Twist 22" Sendero Contour$815.99
• CMMGCMMG Banshee Mk4 30AF20ACT Pistol .300 BLK 8" 30+1 Semi-Auto Coyote Tan Threaded Barrel RipBrace$1250.76
• CMMGCMMG Barrel and BCG Kit 8in 4140CM SBN 40 S&W$409.99
• Palmetto State ArmoryPSA 8" PCC 9mm 1/10 Nitride Barrel Thread Pitch: 1/2x28$99.99
• QQ The Fix 8.6 Blackout 8 Threaded Barrel 1 10RD Magazineblack Folding And Adjustable Stock Short Barreled Rifle$4000.00
• CMMGCMMG Banshee MKGs 9mm 8" Barrel 33-Rounds Glock Mags$1482.59
• CMMGCMMG 4.6X30mm Hk Barrel And Bcg Kit 8in 4140 Salt Bath Nitride$389.99
• CMMGCMMG Banshee FE MkGs 99A520F-TNG Pistol 9mm 8" 33+1 Semi-Auto Tungsten Cerakote, Threaded Barrel$1555.44
• Ballistic AdvantageBallistic Advantage Premium Series Ruger 22 Charger Takedown .22 Long Rifle Threaded Rifle Barrel 8 inch Spiral Fluted 1-16 Twist 1/2-28 TPI Fluted$175.75
• Ballistic AdvantageBallistic Advantage Premium Series Ruger 22 Charger Takedown .22 Long Rifle Threaded Rifle Barrel 8 inch Straight Fluted 1-16 Twist 1/2-28 TPI Fluted$175.75
• QQ Barrel, Light Profile, 8", 1:3 Twist, 8.6 Blackout, fits Q Fix, Matte Stainless Finish, Gray$515.00
• Palmetto State ArmoryPSA Guardsman-15 Barrel 8" 300 Blackout 1:7 Pistol-Length CL Phosphate$149.99
• CMMGCMMG Barrel and BCG Kit 8in 4140CM SBN 57 x 28mm$354.64

Browse all 78 barrels →

See the barrels builders picked most this month →