The 28" low step barrels are as rare as the 30" 20 gauge barrels. Here is the story. One day, I went to the factory in Accokeek, MD to see about getting skeet barrels. I sat in the shop office with my friend, a Beretta gunsmith, and told him I wanted to have a set of skeet barrels installed on the 20 gauge 682. He said that wouldn't work because the high stock would make the rib on the skeet barrels way too low to shoot well. He picked up the gun and went into the shop, came back about 30 minutes later. The gun had a set of 28" low step trap barrels with a sight on the end. I asked where he came up with such a set of barrels and he replied that someone must have damaged the end of a set of 32" trap barrels. I had the feeling that the damage had occurred in the past 30 minutes. The bill for the damaged set of barrels was $225. Those were the days.
