Hey guys I am a ammo collector and I have always been into all plastics I think they are so cool unfortunately they stopped making them well before my time so I have not been able to shoot many but I am searching for any information you guys might have on the such as what gauges they were available in (to my knowledge they were only available 12, 16, 20 and 10 gauge) but I could be wrong and what brands they were made by I am aware of a few but not many but anyways thank you for any/all information you might have on these incredibly interesting cartridges