I know there are some members that shoot Remington 31 models.Can anyone tell me if all grades were offered with solid rib option?
The Model 31-TC "Target" Grade featured a 30- or 32-inch ventilated rib barrel. There was another trap gun, the Model 31S "Special Trap" with a solid rib barrel. Remington only offered three ventilated rib barrels for the Model 31, the 12-gauge 30- & 32-inch Trap barrels and the shorter 12-gauge
SKEET barrel. Everything from a Model 31A "Standard" Grade to the Model 31F "Premier" Grade could be had with a plain or a solid rib barrel. I have not heard of anything but a plain barrel for the Model 31R "Riot" Grade. Remington never offered a vent rib on the 16- & 20-gauge Model 31, just plain and solid rib barrels. Model 31 ribs were milled integral with the barrel.
In the same years, Remington offered plain, solid rib and ventilated ribs barrels for their Model 11 and "The Sportsman" autoloaders in all three gauges and most barrel lengths. Also all milled integral with the barrels.