Abstract: Provided is an increased capacity firearm ammunition magazine with a metallic body. The body is dimensioned to compatibly replace a (OEM) polymer or polymer over metal single stack magazine. The body has walls with exterior dimensions compatibly matching those of the OEM magazine and that are thinner than those of the OEM magazine. The thinner walls allow an at least partially laterally offset arrangement of cartridges therein. A longitudinal exterior ridge extends along a forward wall of the body and is configured from the metallic body walls and sized to compensate for forward-to-aft dimensioning difference compared to that of the OEM magazine.

Abstract: Provided is an increased capacity firearm ammunition magazine with a metallic body. The body is dimensioned to compatibly replace a (OEM) polymer or polymer over metal single stack magazine. The body has walls with exterior dimensions compatibly matching those of the OEM magazine and that are thinner than those of the OEM magazine. The thinner walls allow an at least partially laterally offset arrangement of cartridges therein. A longitudinal exterior ridge extends along a forward wall of the body and is configured from the metallic body walls and sized to compensate for forward-to-aft dimensioning difference compared to that of the OEM magazine.

Abstract: Air treatment systems and methods of use, including systems useful for both cooling air and heating air; and in some particular aspects a single coil useful for both heating air and for cooling air.

Abstract: A pipe cleaning apparatus includes an apparatus support frame having an elongated carriage frame member; at least one pipe blasting assembly carried by the carriage frame member of the apparatus support frame and including an assembly carriage carried by the carriage frame member, a pair of generally elongated, semicircular assembly jaws pivotally carried by the assembly carriage and each having a jaw interior, a plurality of spaced-apart blast nozzles carried by each of the assembly jaws in the jaw interior and a blast pump communicating with the plurality of blast nozzles; and a linear actuator engaging the at least one pipe blasting assembly and operable to facilitate travel of the pipe blasting assembly along the carriage frame member.