When it comes to holsters, one of the best manufactures on the market is Uncle Mike's. Uncle Mike's engineered these Dual-Retention holsters to fit the spectrum of law enforcement pistols, revolvers and use scenarios. A non-stretch retention strap takes the point. It's backed up by an independent tensioning device that adjusts to apply varying degrees of clamping pressure.
Specifications and Features:
GLOCK 20, 21, 29, 30