The Prep Bible.
These two units fit different platforms. Read this as a line-vs-line breakdown, then pick the version cut for your own setup.
Safariland 7371 7TS ALS Paddle Holster (7371V2-895-411) is built for the Glock 43/43X and Hellcat, listed for gun makes Glock and Springfield Armory. It is a nylon OWB belt holster designed for concealment carry.
Safariland 7378 ALS Concealment Holster (7378-365-411) is cut for the SIG P365, listed for gun make SIG Sauer, right hand, black finish. It is also a nylon OWB belt holster.
Both are Safariland concealment holsters using ALS retention and nylon construction, but they are molded for different pistols and different gun makes, so they are not interchangeable.
Spec for spec
SpecSafariland 7371 7TS ALSSafariland 7378 ALS
MaterialNylonNylon
Carry LocationBelt (OWB)Belt (OWB)
For Gun MakeGlock, Springfield ArmorySIG Sauer
For Gun TypePistolPistol