I have one of these that came with a gun I traded for. It has A/O and target windage/elevation adjustments(Factory) and a Duplex cross hair. Anyone know when leupold made these scopes ?

If I remember right, the last year the "M8" series was made was 2004. Or maybe it was 2003? I am pretty sure it was 2004!

I removed the butler creek cover from the objective and found m-8 6x42 AO tactical . So that explains what it is

The alpha letter in your scope's serial number holds the answer:

The Leupold Answer Guide

When was my Scope Manufactured?
What year was my scope manufactured? Since 1974 Leupold has incorporated a letter date code in the serial number of each scope. The prefix, beginning with the letter E, was advanced each year. In 1993 the letter changed to a suffix, and was moved to the end of the serial number. Any scope without a letter in the serial number was produced before 1974. The following is a list of the date codes for each year of production. Prefix: E - 1974 J - 1978 N - 1982 T - 1986 X - 1990 F - 1975 K - 1979 P - 1983 U - 1987 Y - 1991 G - 1976 L - 1980 R - 1984 V - 1988 Z - 1992 H - 1977 M - 1981 S - 1985 W - 1989 Suffix: A - 1993 B - 1994 C - 1995 D - 1996 E - 1997 F - 1998 G - 1999 For more information, please consult our list of "frequently asked questions" at www.leupold.com/tifaq.