they are i emailed them to see if anyone he knew or worked for in the company used a nova/kicks combo and he emailed back the email was compnchoke somehting i thouhgt i sent it to the wrong comp. but he said try the winchester hv 4 or 5 i like it but have to do a little more patterning last yr not knowing i shot A hevi shot out of it at a bird and killed it at about 45 . but its not recomended