Description
The Blackhawk Multi-Use Holster in Size 3 is the kind of no-nonsense nylon rig that just works. It's built to fit large autos with 4.5 to 5 inch barrels, so full-size pistols like a Government 1911 or a Glock 20/21 drop right in. What sets it apart is the flexibility: it's fully ambidextrous and swaps between belt carry and inside-the-waistband duty without you buying a second holster.
How the Blackhawk Ambidextrous Holster Carries
The injection-molded belt loops do double duty here. They accept belts up to 1.75 inches in the traditional vertical position, and they also act as a cover for the reversible retention strap and molded thumb break. Want to run it middle-of-the-back instead? Wear it horizontally on a dress belt up to 1.5 inches wide. There's also a removable spring-steel clip, so you can ditch the loops entirely and tuck it inside the waistband against your pants or belt.
Built From 1000D Nylon With a Mag Pouch
The body is 1000 denier Cordura nylon, which is the workhorse fabric Blackhawk leans on for gear that gets handled daily and keeps going. The reversible, non-stretch hook-and-loop retention strap pairs with a molded thumb break to keep your pistol seated until you want it out. Up front, there's an adjustable magazine pouch with a retention flap, and that spot isn't picky: it'll hold a spare mag or a compact light just as easily.
Who the Size 3 Blackhawk Holster Fits
Size 3 is the large-auto slot in Blackhawk's nylon lineup, cut for those 4.5 to 5 inch barreled full-size pistols. Because the ambidextrous design and adjustable retention give you room to fine-tune the fit, a range of similarly sized semi-autos will settle in comfortably. It's a smart pick for range days, a truck gun setup, or anyone who likes having one versatile holster instead of a drawer full of single-purpose ones.
Key Specifications
- Manufacturer: Blackhawk
- Manufacturer Part Number: 40AM03BKA
- UPC: 199270990101
- Model: Multi-Use
- Size: 03
- Firearm Fit: Large Autos, 4.5" – 5" Barrel
- Carry Style: Belt (OWB) or Inside-the-Waistband
- Hand Orientation: Ambidextrous
- Material: 1000 Denier Cordura Nylon
- Color: Black
- Belt Fit: Up to 1.75" vertical / up to 1.5" horizontal
- Retention: Reversible hook-and-loop strap with molded thumb break
- Mount Options: Injection-molded belt loops and removable spring-steel clip
What’s Included
- Blackhawk Multi-Use ambidextrous holster (Size 3, Black)
- Integrated spare magazine pouch with adjustable retention flap
- Removable spring-steel belt clip
Frequently Asked Questions
What pistols does the Size 3 Blackhawk ambidextrous holster fit?
Size 3 is cut for large autos with 4.5 to 5 inch barrels, so full-size pistols like a Government 1911 or a Glock 20/21 fit well. Because the retention is adjustable and the design is ambidextrous, other similarly sized semi-autos in that barrel range will usually work too. If your pistol falls in that 4.5 to 5 inch barrel window, this is the size to grab.
Can I carry this Blackhawk holster inside the waistband and outside the belt?
Yes, that's the whole point of the Multi-Use design. The injection-molded belt loops handle outside-the-belt carry, and a removable spring-steel clip lets you run it inside the waistband instead. You get both carry methods out of one holster without buying anything extra.
Does this holster work for both left and right hand shooters?
It does. The holster is fully ambidextrous, and the retention strap and thumb break are reversible, so you can set it up for either side. That makes it easy to share or switch hands depending on how you like to carry.
What can I put in the magazine pouch?
The pouch mounts on the front of the holster and has an adjustable retention flap to keep things secure. It's sized for a spare magazine, but plenty of folks use that spot for a compact flashlight or similar tool instead. The flap adjusts so you can dial in the fit for whatever you carry.




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