Restrictions

Top takeaways

  1. PROOF Research offers stainless steel barrels with extreme accuracy and quality, utilizing double stress-relieved 416R stainless steel for precision rifle barrels.
  2. The 416R stainless steel used is chosen for its excellent machinability, homogeneous microstructure, and combination of high tensile strength with adequate toughness.
  3. Barrels undergo a meticulous process including drilling, contouring, reaming, rifling, lapping, and individual bore scope inspection, but do not include gas block, gas tube, or bolt (except for 300BLK).

Attributes

Cartridge: 308 Winchester Finish: Stainless Steel Gas System Length: Rifle Length: 18'' Make: AR .308 Muzzle Threads: 5/8-24 Twist: 1-10 Delivery weight: 1.56kg

Item details

Made in USA
US export classification: 0A501.c