Rozotta does a mod of the ASG MK23 barrel extension to make it even more silent... "In this video I share my experiences and thoughts on using a DIY MK23 airsoft suppressor. I decided to modify my ASG MK23 barrel extension and repurpose it to create an effective airsoft suppressor. I created the baffles using scotch brite scouring pads but there are many other materials you can use including foam and sponge. I also show how it compares against the Silverback MK23 airsoft suppressor."