The Hornady Hot Tub is a 9-liter sonic cleaner that, when combined with One Shot Sonic Clean solution, removes carbon residue and other debris from both internal and external surfaces, and can accommodate items as large as a 16" AR-15 upper receiver. Available in both 110- and 220-volt configurations. Price: $625. Contact: Hornady Mfg. Co.; (308) 382-1390; hornady.com.