I was doubtful as too how these little foam swabs would work, I was thinking they were going to fall apart! How wrong I was! After a training session, I used the 40 cal. swab and my partner used the 9mm swabs to clean our weapons. Much to both our amazement they performed flawlessly and, more importrantly held together! We both agreed our weapons have never been cleaner! You now have two new converts! We both are now trying to convince others in our group to give them a try! I intend to to try more of your products!