Whether you're cleaning a .22 LR rimfire or a .223/5.56mm centerfire, the bore diameter is the same - and this .22 caliber brass bore brush fits both. Phosphor bronze bristles tackle lead buildup from rimfire rounds and copper jacket fouling from centerfire loads, all without scratching the bore.
The .22 is the most popular rifle caliber in the world. It's the first gun for millions of shooters, and it stays in regular rotation for plinking, training, small game, and competition. Rimfire .22 LR fouling is particularly stubborn - waxy bullet lube and lead residue build up fast and are more corrosive than centerfire fouling. Experienced shooters know: a .22 that stops grouping usually just needs a good bore cleaning.
Always push this rifle cleaning brush fully through - never reverse it inside the bore. Use with bore solvent after each session, and replace the brush when bristles lose their grip. Consistent gun cleaning is what keeps a .22 accurate over thousands of rounds.