Otis Technology is known for making full featured pull-through cleaning kits. Their kits are the standard AR cleaning kits issued to to grunts in the US Army which should attest to their ruggedness and dependability. At their booth at SHOT Show 2023, they showcased their first rigid rod systems. Caliber specific sectional rod kits and solid rods in brass and coated stainless stee.
I asked them why they didn’t also offer carbon fiber rods and their answer was for rigidity. If you have to tap out a slug or blockage, you don’t want the flexibility of carbon fiber; and if you want lightness of carbon fiber, you should just use their pull-through cables. Makes sense.
Their multi-caliber sectional rod kit is available through my Amazon Affiliates link: https://amzn.to/3FksDSW