You can have a longer barrel cut to 18.6, preferably by a 'smith who knows what they're doing. Go under and there are "issues" but keep it over and you're OK. I'm not sure that 18'5+ were ever available, I've certainly never seen one.
I was hoping to find another so i didnt have to cut down my barrel, any length would do if i could cut one down. I believe they made a 1187 police model with an 18.5", could be hard to find though.
They actually made a 14" stock SG, not modded (might have even been 12" ?). Not many of them out there but I've seen them.
Yes it was a 14" barrel, unfortunately with a 14" the gun become restricted.
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