It was made in the year 1976.
Try this link--- http://oldguns.net/sn_php/marlinlookup.php
The 2 letter prefix of AB to your serial number indicate that your Marlin-Glenfield model 30 rifle was made in the year 1966.
The Marlin model 24 shotgun was produced by Marlin from 1908-1915.
By the serial number letter prefix. The Model 30 was introduced in 1964. A Y or Z prefix is for 1964. AA in 1965, AB in 66, etc.
Your Marlin model 336RC(regular carbine) was made by marlin in the year 1955.
1950.
1951
1974
The date code for a Model 336 with an F as the prefix is 1948.
Your Marlin model 1894S was made in the year 1988 with the serial number that you have supplied.
Contact marlin customer service through their website.