I'm looking for a holster for my G19 with an RMR and X300U-A.  I do a lot of dual-sport dirt bike riding where I spend about an hour on the streets to get to the trail, where I do some fairly technical riding. I need a holster that I can conceal well enough under a hoodie or enduro jacket but which has some sort of active retention to hold the pistol in place in case I go down.  I've typically been carrying with an RCS Perun and I like how well it conceals but, even with the retention slider as tight as possible, I don't feel very confident that the pistol will stay in place in case of a hard fall.  I've been looking at the 7ts series of holsters from Safariland and the Mora from Tier 1 but I haven't found any good comparisons between the 2 and I'm open to other options.

Talk to Dale Fricke.  He has a website, tell him what you need.

In that situation and point of use, Safariland is the answer.

Shoulder holster with snap?   If you don’t. We’d to conceal it a level 3 safariland is the way to go.