Best use ever, keeping some numbnuts RSO volunteer from dicking with your firearm. I have had more than one pick up one of my open and locked weapons and then let it drop back onto the table. Its a single layer of carpet on the concrete table , (if there is any padding at all) and that just irks the shit our of me. Yeah, its only and inch or two, or maybe the muzzle never leaves the table, (nice on the barrel ya know, as he tips the weapon up to check the chamber) and then it gets dropped as he hurries to the next table. I wanna kill the bastard. Sometimes the fucker will do it just because he has never seen a gun like that before and just wants to pick it up (My Coltguard AR-15 being a prime example) and then gets a reminder to move along from the range master and drops it. Yeah, I use chamber flags.