Wheeler Bore Guide with Precision CNC Alumunium, Solvent Port, and Durable Anodized Finish for Gunsmithing, Shooting Sports

The Wheeler Engineering 300 AAC Blackout Bore Guide Bore Guides are precision CNC machined aluminum with a durable anodized finish. They fit securely in a variety of tactical uppers and can be retained in place by closing the dust cover on the upper which engages a groove in the guide. The bore guides also have chemical resistant O-rings for retention in uppers without dust covers. The 300 AAC Blackout Bore Guide works on any 30 caliber tactical rifle. The nozzle extends inside the chamber to prevent solvent from leaking into the action. A solvent port is conveniently located to the rear of the guide which extends out of the upper making it easily accessible during cleaning. Bore Guide Inner tube diameter.250" (not intended for 6.8mm jag).