Criterion Barrels CORE 300 Blackout Pistol Length AR-15 Barrel - 8.5”

Manufactured by Criterion Barrels Inc.
SKU: 300B-8CR3
MPN: 300B-8CR3
Manufactured by Criterion Barrels Inc.
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$329.99

In Stock

Non-FFL orders placed before 3:30pm CST will ship same business day. Non-FFL orders placed after 3:30pm CST will be shipped the next business day. FFL orders will ship within 3 business days once transfer details are provided.

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Details

Details

The Criterion Barrels CORE 300 BLK 8.5” AR-15 Barrel is built for enhanced performance in tactical applications. Featuring a continuous taper profile, it optimizes weight distribution for better balance, heat dissipation, and improved handling—ideal for use with optics and suppressors. This pistol-length barrel is chrome-lined for exceptional durability and corrosion resistance, while the honed and hand-lapped rifling ensures consistent accuracy. A polished chamber and precision-tuned gas port provide smooth cycling and reliable extraction. With 5/8x24 threads, it’s ready for your preferred muzzle device.

Features:

  • 8.5” barrel chambered in 300BLK
  • Continuous taper profile
  • Chrome lined
  • Honed and lapped rifiling
  • Polished chamber
  • Tuned gas port
  • Pistol-length gas system
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Specifications

Barrel CoatingManganese Phosphate
Barrel ContourTapered
Barrel Length8.5
Barrel LiningChrome
Barrel Material4150 Chrome Moly Steel
BrandCriterion Barrels Inc.
Caliber Gauge300 Blackout
Gas Seat Diameter.750
Gas System LengthPistol
Thread Pattern5/8 X 24
Twist Rate1:7
Weight1.15 lbs.
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

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