OTIS Shotgun Brush Adapter (8-32 to 5/16-27 Threads) FG-171

Otis Ripcord (.22/.223/5.56) Caliber: FG-RC-325

Pro-Shot Shotgun Adaptor #8-32 to #5-16-27 Thread on Shotgun Accessories AD1

Otis Ripcord (.30/.308/7.62) Caliber: FG-RC-330

Otis Ripcord - .270/6.8 Caliber - FG-RC-327

Otis .50 Cal/12.7mm Bronze/Nylon 2-Pack Bore Brush #8-32 - Reliable Bore Brushes - FG350NB

Otis Chamber Brush - .308/7.62mm - FG-368 HT

Otis 41CAL Bore Brush