This shoulder holster fits the SERPA holsters and accessories, such as magazine pouches, very nicely. I used this for the holster on one side and two mag pouches on the other. However, I have a full size 45 Glock, and while it worked, it wasn't able to hold the gun securely against my side. It would flop around when doing anything physical, and while seated, would tend to slide toward my back making it difficult to reach the gun. The elastic straps that are meant to fasten to your belt loop weren't adequate. I am a medium build, and the medium sized harness was almost too big; I had all the adjustment I could out of it trying to secure the gun. Overall, this is a nice harness and I would recommend it, but it would probably work best with smaller guns.
Pros: works well with the SERPA holsters and accessories
Cons: adjustability; not the best choice for larger pistols
This review was written in the old system and had content requirements that are different than reviews written today.