The Criterion Barrels Hybrid LR-308 Barrel features a Hybrid contour that balances weight and intelligently distributed barrel material for excellent heat absorption and harmonic control. This mid-weight barrel is designed for field use and high rates of fire, delivering consistent performance. Specifications include a 16 inch rifle-length profile with a 1:8 twist and stainless steel construction. Headspace (bolt-to-barrel fit) should be checked for optimal performance and reliability to ensure consistent chambering and reliable function.