Because 16 is a defacto standard for ARs. So its good for comparisons, as long as they test everything on a 16. Plus, this suppressor would be right at home on a 16.
Printable View
Bought mine last week. It’s on its way to local dealer now. It’ll be going on my PS90 SBR.
On an 11.5
https://www.youtube.com/watch?v=jFkhg6TiTss