What year was your glenfield mod 10 22 sllr serial number 25672449?

The Glenfield Model 10-22 SLLR, with the serial number 25672449, was manufactured by Marlin Firearms in the 1970s. Based on the serial number, it is likely from around 1973. For a more precise year, you might want to consult specific Marlin production records or resources dedicated to firearms dating.