I mainly bought this to use with my two .22 cal rifles. The brush is too tight of a fit to use on a .22. But for my Colt, the .223 seems to fit just right. Also special cleaning patches are needed that have strategically placed cuts to hook into so the patch doesn't jam up the barrel. And there's a special way to hook the patch on to the jag end. You don't just slide the patch through the hole and go to town. I'm not happy with this.
Pros: works good for .223
Cons: for .22LR too tight, special cleaning patches needed
This review was written in the old system and had content requirements that are different than reviews written today.