Quote Originally Posted by Rob Anybody View Post
I suppose it depends on the rifle you want to put it on,,, (you haven't said)

I have a back venting Huub shroud on my BSA Scorpion and its so quiet you can only hear the pellet impact, (it adds about 3-4 inches or less than 100mm for you young folks)
but that wouldn't work on a spring gun.. so shroud aside probably the HW mod seems to be the one most folks crow about
Its going to be used on a kral np o2 its a short gun so I was hoping to keep to short