O12-PL® Shotgun Blend Plastic Remover Serious shotgun shooters know the importance of a clean barrel and chokes. They also know plastic fouling left behind by shotgun wads can affect performance. Use the Otis O12-PL® Shotgun Blend Plastic Remover to quickly and effectively eliminate plastic residue. This unique blend is ammonia free and also removes lead and carbon fouling. Quickly remove fouling from the forcing cone, barrel, and choke in one step. Removes plastic, lead, and carbon fouling with ease, Clean fouling from the forcing cone, barrel, and choke with one blend, Safe for the environment – biodegradable & ammonia free.