Wheeler 156213 Delta Series Bore Guide 204 Cal 223 Cal AR Platform Firearm Anodized Aluminum

The AR-15 Bore Guide is constructed of precision CNC-machined aluminum with a durable anodized finish. It fits securely in any AR-15 upper and can be retained in place by closing the dust cover on the upper which engages a groove in the guide. The bore guide also has chemical-resistant O-rings for retention in uppers without dust covers. It works well with .223 and .204, extending inside the chamber to prevent solvent from leaking into the action. A solvent port is conveniently located to the re