I wanted to get an extra magazine carrier and purchased one at a local gun store but returned it two days later. Trying to get the magazine out was a chore, it just pinched the magazine too much. One reason was that it was just a generic holder for a "single stack" magazine.
My primary carry weapon is a Glock 43 and you had an IWB carrier for that specific pistol.
I have carried it as an IWB but also found out I could just as easily carry it OWB which I often do because its one less thing to tighten the waist ban. Either way, it is comfortable, fits the magazine perfectly and releases it as it should yet retains adequate tension.
I am sure I will be looking at Red Republic Tactical in the future for other products.
Fit and finish is good, retention is good but the mag is easy to remove, the carrier works either iwb for carry or owb for the range. 5 stars