The Esstac kywi mag pouch is fitted with kydex for a secure and fast draw/reinsertion of m4 magazine. With the tall style Esstac there are more points of contact for the magazine making it enen more secure. Fix with WTF straps they loop like standard molle though more tedious to set up it’s lighter then molle and more thinner making pouches stick to carriers closer. The kydex retention can be adjusted to be tighter or looser with heat take out the the inserts via pushing them out. These can fit ak74 mag though not the best.