The MTM Case-Gard Screw-It Deluxe Bore Guide Kit (MTM-SBK) is a 9-piece modular rifle cleaning accessory engineered to align cleaning rods and seal actions against chemical solvent leakage. Constructed from chemical-resistant moulded polymer, the system uses a screw-in modular collar mechanism that seats into the firearm chamber. This alignment protects the throat and rifling from rod abrasion while deflecting harsh cleaning solvents and debris away from the trigger assembly, magazine well, and bedding. The kit includes interchangeable guide tips, collars, an AR upper link, and a dedicated hard polymer storage case.

Key Features

• Throat and Rifling Protection: Centers cleaning rods straight through the action to eliminate rod rubbing against the chamber throat and bore.
• Chemical Solvent Deflection: Creates a sealed barrier in the chamber raceway to prevent dirty solvents and bore cleaners from leaking into the action and trigger mechanism.
• Universal 9-Piece Modular System: Includes interchangeable guide tips, collars, and an AR upper receiver link to hold break-open actions securely during maintenance.
• Chemical-Resistant Construction: Moulded from durable polymer that withstands standard gun cleaning chemicals and solvents without degrading.
• Dedicated Storage: Houses all 9 interchangeable components inside an integrated plastic hard case.

Specifications

• Product: MTM Case-Gard Screw-It Deluxe Bore Guide Kit
• Model/SKU: SBK / MTM-SBK
• Material: Chemical-resistant moulded polymer
• Kit Contents: 9-piece system including interchangeable tips, collars, AR link, and storage box
• Maximum Bolt Body Diameter Compatibility: 0.695 in (17.65 mm) or smaller
• Maximum Cleaning Rod Diameter Compatibility: 0.375 in (3/8 in / 9.5 mm)
• Compatible Action Types: Bolt-action rifles and pivot-open AR upper receivers
• Power Requirements: None (manual mechanical tool)

Who is the MTM Deluxe Bore Guide Kit for?

• Bolt-action centerfire rifle target shooters — Requires a rifle bore guide kit that fits bolt actions with bolt body diameters of 0.695 in (17.65 mm) or smaller, ensuring precise rod centering for cleaning rods up to 0.375 in (9.5 mm) to prevent throat wear and protect match-grade rifling.
• Bolt-action centerfire rifle hunters — Requires a chemical-resistant rifle bore guide kit compatible with standard hunting rifle bolt raceways up to 0.695 in (17.65 mm) to deflect harsh bore cleaners away from the trigger group, internal magazine, and stock bedding during regular maintenance.

Less suitable for: Bolt-action rifles with large magnum or custom bolt bodies exceeding 0.695 in (17.65 mm) in diameter, or cleaning shafts exceeding 0.375 in (9.5 mm) in diameter, which require an oversized magnum-specific bore guide.