Description
A bore guide is one of those small tools that saves you a lot of grief down the road. When you push a cleaning rod through the chamber without one, the rod can flex and drag against the throat and rifling, and over time that wears on the exact surfaces that keep your rifle accurate. This Lyman guide slides into the chamber and lines the rod up straight before it ever touches the barrel, so every patch and brush pass runs true down the center.
What the Lyman Universal Bore Guide Set Covers
The "universal" part is the real draw here. The set includes interchangeable tips that fit bore sizes from .17 all the way up to .416, so you can jump from a rimfire varmint gun to a big-game bolt rifle without buying a separate guide for each one. There's also an adapter sleeve for the AR-15, which means it works across most bolt actions and modern sporting rifles alike. If you keep a variety of rifles or run a busy cleaning bench, having one guide handle the whole spread is hard to beat.
Built to Take Regular Use
Everything is precision machined from anodized aluminum, so it stays light and holds up to repeated cleanings. The thread-on nozzles keep the guide from getting stuck in the chamber, which is a nice touch anyone who has fought with a jammed guide will appreciate. It plays well with most cleaning rods too, including Lyman's own Universal Cleaning Rod System and their jag and brush sets.
A Smarter Way to Wet a Patch
One detail that stands out is the machined-in solvent port. Instead of trying to shove a soaked patch into the open end and making a mess, you drop your solvent right through the port onto the patch already loaded on the rod. It keeps solvent out of your trigger group and off your action, and it just makes the whole job cleaner and quicker. For anyone who takes barrel care seriously, this is a straightforward addition to the bench that pays for itself in protected rifling.
Key Specifications
- Manufacturer: Lyman
- Manufacturer Part Number: 04045
- UPC: 011516040459
- Product Type: Bore Guide
- Style: Rifle
- Caliber Range: .17 to .416
- Material: Anodized Aluminum
- Fitment: Most bolt-action rifles and AR-15
- Length: 13 in
- Quantity: 1 Set
- Shipping Weight: 0.3375 lb
- Country of Manufacture: United States
What’s Included
- Lyman universal bore guide
- Interchangeable tips covering .17 to .416 caliber
- AR-15 adapter sleeve
- Thread-on nozzles
Frequently Asked Questions
What calibers does the Lyman Universal Bore Guide Set fit?
The interchangeable tips cover bore sizes from .17 all the way up to .416, so it handles everything from small rimfire and varmint rifles to larger big-game calibers. It's designed to fit most bolt-action rifles. There's also an adapter sleeve included for the AR-15.
Does this bore guide work with an AR-15?
Yes. The set comes with a dedicated adapter sleeve for the AR-15, so the same guide covers both bolt actions and AR-platform rifles. That makes it a solid one-tool option if you're maintaining a mix of rifles.
What's the solvent port on the Lyman bore guide for?
The machined-in port lets you apply solvent directly onto a patch that's already loaded on the rod inside the guide. It's cleaner and neater than trying to push a wet patch into the open end. It also helps keep solvent from running into your trigger group and action.
Will the guide get stuck in my chamber?
The thread-on nozzles are built specifically to prevent the guide from sticking in the chamber. Combined with the anodized aluminum build, it seats and removes cleanly during regular use.





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