For building uppers we highly recommend using a rod type tool (reaction rod) which engages the barrel extension lugs. These type of tools are used here, at BCM, for assembly and take assembly forces off of the upper. These are available from a number of companies including Midwest industries, Geissele, and Wheeler engineering.

BCM® Enhanced Profile Barrels

See the advantages of BCM Enhanced Profile Barrels.

  • Continuous taper designed for optimal weight, balance, and performance.
  • Optional Fluted profile toward the rear near chamber area - Increases strength and heat dissipation.
  • Tapered profile out front, for easier maneuverability.
  • No sharp handguard cap shoulder for improved barrel harmonics and improved accuracy.



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