Model 742 ser no B7446425 what year was it mfg
Hello. If your talking about a Remington 742 this may help.
Overview:
Description:Autoloading RifleIntroduction Year:1960Year Discontinued:1980Total Production:Approximately: 1,433,269Designer/Inventor:Research & DevelopmentAction Type:AutoloaderCaliber/Gauge:.243 Win, 6mm Remington, .280 Remington, .30-06, .308 WinSerial Number Blocks:1951-1967 1,000-541,000
1968-1975 6,900,000-7,499,999
1975-1978 A6,900,000-A7,499,999
1978-1981 B6,900,000-B7,499,999
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