Original sentence: A slightly shorter variant called the Model 50 was produced.Another variant called the Model 5510 SuperGoose was produced and chambered for the 10-gauge cartridge
Edited sentence: Glenfield Model 50: 1966-1973   A slightly shorter variant called the Model 50 was produced.Model 55 Goose Gun: The Goose Gun was a 12 gauge that was produced from 1962 until 1988 and it featured a 36" barrel with an overall length of 56¾" and weighed 8 lbs.Model 55 Hunter: The original model, the Model 55 Hunter, was produced from 1954 until 1964 in 12 gauge (1956-1964 in 20 gauge & 1961-1966 in 16 gauge).Model 55 Slug Gun: The Model 55 Slug Gun was a 12 gauge produced from 1973 until 1979.Model 55 Swamp Gun: The Swamp Gun was a 12 gauge that was only produced from 1963 to 1965.Model 5510 SuperGoose: Another variant called the Model 5510 SuperGoose was produced and chambered for the 10-gauge cartridge.Model 55G (Glenfield): The Model 55G (Glenfield) was produced between 1961 and 1965 in 12, 16 and 20 gauges