Description
The Gunmaster GM308AR from DAC Technologies is one of those kits that just makes sense for anyone running a .30 cal or 7.62mm rifle. It leans on a 33-inch pull-through cord instead of a stack of screw-together rods, which means you pull cleaning gear straight through the bore from the breech end the way most folks prefer to do it. The whole set nests into a slim molded case that slides into a range bag or truck box without taking over the whole thing.
What the GM308AR Brings to the Bench
Inside you get the essentials for real bore care: a phosphor bronze brush to break up carbon and copper fouling, a wool mop for a clean final pass, a slotted tip and a brass jag for running patches, plus 25 patches to get you started. The hybrid multi-function handle is the standout piece here since it accepts the pull cord, the brass rods, and the driver bits, so one handle covers pushing, pulling, and turning.
Field Fixes With the Gunmaster Driver Set
Beyond the bore work, the kit tucks in a 6-piece bit set with three star bits (T10, T15, T20), two hex bits (3/32 and 7/64), and a flat head, along with a double-ended metal pick and scraper, a nylon utility brush, and a 1/4-inch punch pin. That covers a lot of the little takedown and detail chores that pop up on an AR-pattern .308 or a bolt gun. Owners who've used the GunMaster line tend to like how the coated pull cord wipes clean and how having a labeled spot for every piece keeps things from wandering off into the bottom of a bag.
Who Reaches for This Kit
This is a practical maintenance set rather than a full bench overhaul rig, and that's the appeal. Toss in your favorite solvent and oil, since those aren't included, and you've got a tidy travel kit for hunting trips, range days, or keeping in the safe for quick touch-ups.
Key Specifications
- Manufacturer: DAC Technologies
- Model: GunMaster
- Manufacturer Part Number: GM308AR
- UPC: 761903381770
- Caliber Fit: .30 Caliber / .308 / 7.62mm
- Piece Count: 17 Pieces
- Pull Rod Length: 33 inches
- Bore Brush: Phosphor Bronze
- Driver Bits: 6-Piece Set (3 star, 2 hex, 1 flat head)
- Patches Included: 25
- Case Material: Molded Plastic Case
- Product Type: Rifle Cleaning Kit
What’s Included
- Custom GunMaster molded case
- Hybrid multi-function handle
- 33-inch pull rod
- Two brass rods for attaching the breech brush to the handle
- .30 caliber rifle bore brush (phosphor bronze)
- .30 caliber rifle mop
- .308 breech brush
- .30 caliber slot tip
- Brass jag
- Double-ended metal pick and scraper
- Double-ended nylon utility brush
- 1/4-inch punch pin
- 25 cleaning patches
- 6-piece driver bit set (T10, T15, T20 star; 3/32 and 7/64 hex; 3/32 flat head)
- Instruction sheet
Frequently Asked Questions
What calibers will the Gunmaster GM308AR clean?
This kit is built for .30 caliber rifles, which covers .308 Winchester and 7.62mm NATO chambers. The bore brush, mop, and jag are all sized for that .30 cal bore. If you run other calibers too, you'd want a separate kit or additional caliber-specific brushes.
Does the GM308AR use a pull-through cord or solid rods?
It's a pull-through design centered on a 33-inch coated pull rod, which lets you draw brushes and patches through the bore from the breech end. It also includes short brass rods that thread into the multi-function handle for attaching the breech brush. Plenty of folks prefer the coated cord since it wipes clean easily and won't scratch surfaces.
Will this kit work on an AR-10 or other .308 semi-auto?
Yes, the GM308AR is well suited to AR-pattern .308 and 7.62 rifles as well as bolt guns. The included pick, scraper, nylon utility brush, and punch pin help with the detail cleaning and basic takedown chores those platforms tend to need. Just add your own solvent and oil to round out the routine.
Does the GM308AR come with cleaning solvent or oil?
No, solvent and gun oil are not included, so you'll want to pair it with your preferred products. The kit supplies the tools and 25 patches to apply them. That keeps the case compact and lets you use whatever solvent and lubricant you already trust.





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