So I see value for the diameter but, but not 11 different lengths. (having a couple length options would make sense to me) Am I missing something to this?
I'm guessing the 8.59"/8.50" length they show on their website is the OAL of the device as it would be shown on a Form 4. As long as it doesn't exceed that, the BATFE will be happy. If it is under that, apparently no one cares.