USED – Rosco Manufacturing 8.2″ 300 Blackout Purebred Barrel (1/7 Twist)

Used/Open Box Item: This product is not eligible for return. Click to learn more about used products.



Product Summary

This Rosco Purebred 8.2″ 300 Blackout Barrel was designed for SBR/ Pistol use in conjunction with suppressors.

  • Barrel Length: 8.2″
  • Barrel Weight: 17.49 oz
  • Barrel Material: 416 R
  • Barrel Caliber: 300 BLK
  • Barrel Profile: Heavy
  • Twist: 1/7
  • Barrel Thread: 5/8 x 24
  • Barrel Gas Block Size: 0.750
  • Gas System Length: Pistol
  • Barrel Crown: Step Crown
  • Barrel Finish: 80 Grit Bead Blast
  • Barrel Extension Finish: Nickel Boron


Technical Information

Barrel Twist


Thread Pitch

5/8 x 24

Condition This is a used or open-box item. Products are reviewed and graded by condition.

Catalog Location

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 visit