I guarantee its not going to work in a serpa holster, with a molded holster you need to focus on the slide, which is glock 21. But the serpa requires a glock 21 trigger guard, without it it won't fit or work in that holster.
So your best bet would be a friction fit S&W sigma holster, but since its not a sigma it'll probably fall out.
Molded holsters REQUIRE the gun that they were molded for, otherwise you need a pouch.
|