Wheeler Delta AR-10 Bore Guide. Cleaning without a bore guide can allow the rod to ?bow? and rub or gouge chamber and throat of the bore causing real damage and loss of accuracy. Keeping the rod properly aligned not only protects your barrel it directs the force exerted on the cleaning rod handle allowing tight patches to be pushed more easily. The AR-10 Bore Guide is 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. A solvent port is conveniently located to the rear of the guide which extends out of the upper making it easily accessible during cleaning. Protects chamber & bore from damage Ensures proper rod alignment for easier cleaning Reduces solvent leakage into gun?s action Anodized aluminum for durability Integrated solvent port AR-10/LR Bore Guide fits .308 Secures in place with dust cover engagement Specifications for Wheeler Fine Gunsmith Equipment Delta AR-10 Bore Guide: Manufacturer: Wheeler Engineering Fabric/Material: Aluminum Color: Black Condition: New Finish: Anodized Gun Model: AR-10 Features of Wheeler Fine Gunsmith Equipment Delta AR-10 Bore Guide 156777: Protects chamber and bore from damage. Ensures proper rod alignment for easier cleaning. Reduces solvent leakage into gun's action. Anodized aluminum for durability. Integrated solvent port. AR10/LR Bore Guide fits .308. Secures in place with dust cover engagement. Package Contents: Wheeler Fine Gunsmith Equipment Delta AR10 Bore Guide What firearm models does the manufacturer say Wheeler Fine Gunsmith Equipment Delta AR-10 Bore Guide is compatible with? The manufacturer suggests that Wheeler Fine Gunsmith Equipment Delta AR-10 Bore Guide is compatible with AR-10Wheeler 156777: Delta AR-10 Bore Guide