In cold weather the will drop out when fireing after jus ta few hours if being stored.
If you looking to make sure your ammo is allways there whe nyou need it, the velcro system is the only way to go.
In time the high quality velcro units will lose some of there elastic strenght but at $20 or less you can buy 3-4 of them for the price of the mesa
Im not bashing the mesa because i make a very well made velcro unit, its just the truth.
I have been building combat shotguns for 15yrs and ive used evey part you can think of , untill i started to make my own shotgun parts.
As for the GG&G unit, haveing the shells on an angle like that is great is your standing up right but if your in a defencive position the shells need to be stright up and down so they can be had from any angle.
Its a good game gun idea but not for a defence product.
