Otis Chamber Brush - .223/5.56mm - FG-367- HT

Pro-Shot Rifle Military Style Chamber Cleaning Brush 223 Remington, 5.56x45mm AR-15 M-16 8-32 Threads Bronze

Kleenbore Military Style .223 Remington/5.56x45mm Chamber Brush - M16C

NCSTAR AR-15 Chamber Brush - TBCAR15

Otis FG368HT Chamber Brush 7.62mm AR Platform Firearm 8-32" Thread 1" Long Bronze/Steel Bristles

Pro-Shot Rifle Military Style Chamber Cleaning Brush 7.62x51 NATO AR-10/LR-308 8-32 Threads Bronze

Otis FG265NB Bore Brush Set 6.5mm/264/260 Cal 8-32" Thread 2" Long Bronze/Nylon Bristles 2 Per Pkg

Birchwood Casey MSR Chamber Brush Caliber, 5.56mm 3PK