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Fit Finder › What fits my holster? › Uncle Mike's

Uncle Mike's holster number

3521-3

Uncle Mike's PRO-3 SlimLine Triple Retention Duty Holster

What does it fit?

Confirmed by Uncle Mike's

Glock 17, 19, 22, 23, 31

Size 21 · Right · Mirage Plain

Shop Uncle Mike's in stock →All Uncle Mike's numbers
Understand this holster number
35holster line
21size
-3right, Mirage Plain

Uncle Mike's numbers read line, size, then a dash and a hand or finish digit. The same number is printed without the dash on boxes and store listings (35213), and the barcode starts 043699.

A size number only means something inside its own line: a size 18 PRO-3 and a size 18 Kydex holster fit different guns. Every Uncle Mike's holster in size 21 →

Same holster, other hands and finishes
  • 3521-1 — Right, Cordura nylon
  • 3521-5 — Right, Mirage Basketweave
  • 3521-2 — Left, Cordura nylon
  • 3521-4 — Left, Mirage Plain
  • 3521-6 — Left, Mirage Basketweave

Source: Uncle Mike's 2006 Law Enforcement catalog, umledirect.com.

From Uncle Mike's own catalogs (2006 consumer and law-enforcement editions) and Uncle Mike's Law Enforcement's store listings. Many of these holsters are discontinued; the numbers still identify them. Uncle Mike's is its owner's trademark; Chicks Open Carry is not affiliated with it.