Our single mag carriers utilize the brilliant MRD (Mag Retention Device) which allows for adjustable retention in a way that is easy to dial in. This carrier will replace your old one because it will fit most double stack (9/40) magazines (Glock, M&P, CZ, Sig, to name a few).
The universal design allows for left or right carry, IWB or OWB, rounds forward or rounds-to rear (weirdo).