MagnetoSpeed V3 Chronograph kit with all accessories and extra CR23 batteries for sale in Tucson. This unit is unused because I got a LabRadar shortly after buying this. $350.00 or trade for primers, brass (45 LC, 454 Casull, 35 Rem, 45-70), bullets (.458, .40, .44, .452), revolvers, shotguns, rifles or ? Will meet as far north as Casa Grande and in SE AZ.