Brand: Fobus CU9G
The Fobus Handcuff and GLOCK 9/40, HK 9/40 Magazine Pouch Paddle Holster is what you need. This set up is made of kydex and comes in a black finish.
Specifications and Features:
Fits Handcuff and GLOCK or HK 9mm/.40 magazine
Adjustable design to hold magazines and handcuffs
One piece rivetless design
Tension adjustment screw