SA904 Hoppe's Semi-auto Solvent has been specially developed for today's high-performance, semi-automatic firearms. It does an excellent job of removing copper, lead and powder fouling, leaving absolutely no trace residue. BR904, BR916 Formulated especially for bench rest shooters, Hoppe's Bench Rest 9® is the standard by which all copper solvents are judged. Bench Rest 9 makes it possible for bench rest shooters and serious hunters to clean their bores of copper fouling overnight...instead of three or four days. 904, 905, 916, 932 The most universally used solvent for removing primer, powder, lead and metal fouling - for preventing rust. Quick, super-efficient, safe and easy to use. Flows freely and penetrates rapidly. 990, 991, 999 Made especially for black powder shooters. Hoppe's No 9 Plus is a black powder solvent and patch lubricant. It lubricates as it cleans fouling from the bore and protects against rust and corrosion. Equally effective for deep or shallow grooved barrels. Lubricates patches.