Those look like they are London Bridge Trading single mag pouches that would have come in some of the older NSW/ USMC assaulter kit or as a OPR purchase by a unit back when money was flowing freely.... They work good with metal AR mags, a little tight with P mags, but usable. Also can carry TQ's, smaller bangs, small tools, Smart phone..... Pretty good little pouch but takes up a decent amount of space on your rig for its capacity.
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