VKTR Industries Heavy Duty Buffer Retainer. Crafted from 4140 steel and finished with black ferritic nitride this buffer retainer's patented design features an angled strike face for enhanced surface contact within the buffer assembly. CNC Swiss screw machining ensures high precision while the rotation-inhibited and self-centering characteristics offer reliable seamless operation. This robust buffer retainer is designed to be the ultimate in durability and ease of use for your firearm assembly. Specifications for VKTR Industries Heavy Duty Buffer Retainer: Manufacturer: VKTR Industries Color: Steel Condition: New Features of VKTR Industries Heavy Duty Buffer Retainer: CNC Swiss screw machined for precision Made from durable 4140 steel Black ferritic nitride surface treatment for longevity Rotation-inhibited design to maintain alignment Self-centering feature for consistent functionality Patented strike face design for optimal surface contact Package Contents: VKTR Industries Heavy Duty Buffer Retainer