Cannot be answered unless you provide a serial number with this question.
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 Glenfield Marlin Model 30, often referred to as the Model 30G, was produced starting in the late 1970s. The serial number can help date the specific firearm, as Marlin used a consistent numbering system. However, without the actual serial number, it's not possible to determine the exact year of manufacture. Typically, you can refer to Marlin's serial number lookup charts for more precise dating.
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.
1951
1974
1950.
The date code for a Model 336 with an F as the prefix is 1948.
Contact marlin customer service through their website.