Was looking for info on their "warranty" and couldnt find if it specifically voided it for under 10 inch barrels like many companies do... Planning my 300 Blackout build and plan on doing either the Noveske 10.2 inch or 8 inch setup, and if it was goign to cause problems with the 8 inch, I was just going to do the 10 to not chance anything. Its also going to be used on a 10.3 inch Mk18, and 16 inch 308, but 300 is something where id rather do the shortest barrel possible without compromising anything.