The Dewey AR-15 .300 AAC Blackout Breech Rod Guide (model AR-300, brand part no. AR300) protects the bore and chamber of a .300 Blackout AR-15 during cleaning. Dewey builds the guide from Delrin, brass, and anodized aluminum, centering any J. Dewey cleaning rod in the bore so the rod can’t scrape the rifling or chamber walls on the way through. At roughly 9 inches long, it seats securely in the breech and comes with spare O-rings plus the O-ring installation tool needed to keep it sealed over years of use. Among gun cleaning supplies, this rod guide is a smart add for any .300 Blackout AR-15 owner who cleans from the breech end.

Key Specifications

• The construction combines Delrin, brass, and anodized aluminum.
• The guide is built specifically for the .300 AAC Blackout AR-15 chamber.
• The overall length is approximately 9 inches.
• It works with any J. Dewey cleaning rod.
• The package includes spare O-rings.
• An O-ring installation tool is included.

Frequently Asked Questions

Does this work with any cleaning rod? It’s designed for use with any J. Dewey cleaning rod.

What does a rod guide actually do? It centers the cleaning rod in the bore so it can’t scrape the rifling or chamber walls during cleaning.

Buy the Dewey AR-15 .300 AAC Blackout Rod Guide

Purpose-built for the .300 Blackout chamber and durable enough to last for years, this Dewey rod guide protects your bore every time you clean. Order it from our Lubbock, Texas gun shop and it ships fast to your door.