Unfortunately not. They're a knock off of the Crye Precision Mag Clip and they don't make them for anything other than 5.56 mags either (so there's nothing to copy as such).
They clamp around the bottom end of the mag (there's a screw to tighten them up) and then they just hook into any available MOLLE space. They're pretty snug, most of my mags have Ranger plates now so they don't fit on so easy but I'm thinking of running a few STANAG types with them on a belt rig instead of using pouches.
Pictures...thousand words etc
Interesting, but do you have to rotate the mag to release it from your belt?
I have some of these for a similar effect http://www.fma.hk/style-molle-magclip-bktb274-p-490.html Clip into molle on a belt/vest whatever.
They're OK but I guess I come at the heavier end from the Death Metal side rather than the hardcore/crossover side.
If you don't already know them, try some Brutal Truth
Or maybe some Suffocation
I've just got a pair of Lowa Zephyrs, they're incredibly light but are still very much a boot. You could look at the Under Armour Valsetz range or if you're feeling flush and can find some, the Oakley SI range of tactical footwear.
Just a quick one - you may want to run some tape around the ranger plate to make sure it can't slip off the mag when you're not looking. They don't lock on properly all the time.
From the product description https://www.uktactical.com/p-11533-gunfighter-belt-coyote-tan.aspx
Sorry, misread this but yes, the PLB belt has the "inner belt" attached:
It's also £60 and out of stock in everything but OD.
Actually, might be duty at 16.9% https://www.trade-tariff.service.gov.uk/trade-tariff/commodities/6402919000?day=18&month=3&year=2018 but not sure if the £135 limit may still apply! Still cheap though. Assuming they're not knock offs.
AliExpress, cost about £60 on the mobile app (gives extra discount) https://www.aliexpress.com/item/Free-Float-Slim-Handguard-One-piece-Top-Rail-System-KeyMod-Light-For-AR-15-Black-with/32356102137.html