Lantac barrels are manufactured to the highest level of accuracy during the machining process. Each barrel is chambered and head spaced to a master bolt face with barrel extension individually matched to each barrel too. Chambers are carefully polished after reaming. Our barrel blanks are precision gun drilled, double reamed, precision honed and then rifled with a progressive button system utilizing 6 groove rifling that has been proven to produce the highest level of shooting accuracy. Barrels are also air gauged with a bore concentricity tolerance between .00005''to .0001'' and Cryogenically treated. All muzzles are precision 11° target crowned.

• Certified 416R Stainless Steel. Highest 'Barrel Quality' steel available, cryogenically treated and double stress relieved.
• 1:7 Twist Rate.
• Ultra precise, 6 groove, 2 pass button process, proven to perform to the highest levels of accuracy.
• Head-spaced to master bolt face.
• Extended M4 feed ramps
• YAG Fiber laser engraved logos and nomenclature.
• Fine bead blasted finish before final surface treatment
• Proprietary black surface conversion finish
• 1/2×28 muzzle threads with precision 11° target crown
• Lantac USA barrel contour

ITAR Notice:
This product is manufactured in the USA by LANTAC USA LLC for sale within the USA only.
Export of the commodities described herein is strictly prohibited without a valid export license issued by the U.S. Department of State, Office of Defense Trade Controls, prescribed in the International Traffic in Arms Regulation (ITAR), Title 22, Code of Federal Regulations, Parts 120-130.