This Del-Ton BCG is built to Mil-spec using proper components and finishes. Rest assured with this bolt and carrier assembly in your AR15 build.
Specifications and Features
Phosphated 8620 Steel Carrier Assembly
Carpenter 158 Bolt
Heat Treated and Plated
Chrome Lined Carrier Interior
Carrier Key - Chrome Lined, attached with Grade 8 Screws, Staked and Sealed