Is there a noticeable difference between the difference size models of kaw valley comps? Ie: Xl, slim xl, and normal. — 2 Answers

If you are asking about performance difference between the models, there isn't any information from the manufacturer. One YouTuber measured a 0.2 decibel difference between the normal-sized and the longer 9mm model (measured when firing .223). I have also seen another commenter compare models and claim the 2.25 and 3.25 inch magnum is slightly quieter than normal model. I believe the primary reason there are multiple models is due to how some people have short barrels hidden inside longer handguards and wanted to have a thick blast can protrude. This provides the functional improvement of a linear comp while also improving appearance of an AR pistol or sbr.