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BSF 6.5 Grendel Carbon Fiber AR-15 Barrels have a match-grade 416R stainless steel inner core sleeved in roll-wrapped carbon fiber that provides superb rigidity, weight savings, and excellent cooling. Three times stronger than steel, the carbon fiber sleeve puts an air pocket between the barrel and carbon, allowing air to flow around the stainless steel inner barrel, further enhancing cooling.

Vent holes in the carbon fiber sleeve lets that internal heat escape, expediting barrel cooling even more. In the end, BSF 6.5 Grendel Carbon Fiber AR-15 Barrels stay cool enough you can hold them with your bare hands, even after running 60 consecutive rounds down them!


Match grade inner barrel of double stress-relieved 416R stainless steel

.875" O.D. bull barrel external contour

95% of the carbon fiber wrap does not touch the inner barrel for plenty of heat dissipation

1"-8 rifling

Requires a rifle-length gas tube (available separately)


By using this sleeve system, the BSF 6.5 Grendel Carbon Fiber AR-15 Barrels are able to maintain remarkable stiffness and strength while keeping the barrel extremely lightweight.