Description
Glockswitchstore is a Boise, ID-based retailer specializing in Glock platforms and duty-ready accessories. The Safariland 578 GLS Pro-Fit Holster for Glock 17/19 is an OWB holster featuring the active Grip Lock System retention mechanism. Its multi-fit design provides a secure, adaptable fit for the popular Glock 17/19 family of pistols. Available now for $44.99 with same-day shipping from our Idaho warehouse.
Reviewed by Cody Ramirez, E-Commerce Director at Glockswitchstore. 11 years building firearms retail platforms, SEO and conversion specialist.
Last updated: March 27, 2026
What Makes the Safariland 578 GLS Pro-Fit Holster a Smart Choice?
After handling more holsters than I can count, I can tell you the 578 GLS Pro-Fit stands out for one main reason: it delivers genuine Safariland engineering at a price point that doesn’t require a second mortgage. This isn’t a cheap injection-molded piece; it’s a purpose-built duty holster with an active retention system you can actually trust. For the shooter who needs a secure, fast, and reliable OWB option without the bulk or complexity of a full ALS hood system, this holster hits a very specific sweet spot.
Key Features of the Safariland 578 GLS Pro-Fit Holster
Let’s break down what you’re actually getting for your money. This isn’t marketing fluff; these are the functional details that matter on the range or in the field.
- Grip Lock System (GLS) Retention: This is the heart of the holster. A spring-loaded locking bar engages the trigger guard of your Glock. To draw, you apply inward pressure with your middle finger on the release lever built into the holster’s body. It’s intuitive, fast, and provides a positive, audible click when holstered. The retention is adjustable via a hex screw to match your preference.
- Multi-Fit Design for Glock 17/19 Family: The holster accommodates the Glock 17, 19, 19X, 45, and 47 models, including those with common mounted lights. This versatility is a major value-add, as one holster covers your most likely pistol configurations.
- Molded Polymer Construction: Safariland uses a proprietary, glass-reinforced polymer. It’s rigid enough to protect the trigger and maintain its shape, but has just the right amount of flex for a smooth draw and re-holstering. The finish resists holster wear on your pistol’s slide.
- OWB Belt Loop Design: It ships with a sturdy, fixed 1.75″ belt loop that provides a solid, non-rotating platform. The ride height and cant are fixed, which simplifies the design and contributes to the lower cost. It positions the pistol for a clean, efficient draw stroke.
- Sight Channel & Full Trigger Guard Coverage: The mold is cut to clear suppressor-height sights, and the trigger guard is completely enclosed by the retention mechanism. This is a non-negotiable safety feature in a proper holster.
Safariland 578 GLS Pro-Fit Holster Specifications
| Product Type | Outside-the-Waistband (OWB) Holster |
|---|---|
| Material | Glass-Reinforced Polymer |
| Manufacturing | Injection Molded |
| Finish | Textured Matte |
| Hardness/Quality | Duty-Grade Polymer |
| Compatibility | Glock 17, 19, 19X, 45, 47 (with/without mounted lights) |
| Installation/Usage | 1.75″ Fixed Belt Loop, Right-Hand Draw |
| Weight | 4.2 oz (Holster Only) |
| Dimensions | 8.5″ H x 5.5″ W x 2″ D |
| Country of Origin | United States |
| Condition | New in Package |
| SKU | SAF-578 |
How Does the Safariland 578 GLS Pro-Fit Stack Up?
| Feature | Safariland 578 GLS Pro-Fit | Generic Amazon Kydex Holster (~$30) | Safariland 7TS ALS Holster (~$120+) |
|---|---|---|---|
| Material | Proprietary Reinforced Polymer | Basic Kydex | Duty-Grade Polymer/Boltaron |
| Quality | High-Consistency Molding | Variable, Often Rough Edges | Premium Fit & Finish |
| Compatibility | Multi-Fit Glock 17/19 Family | Usually Single-Model Specific | Specific to Model/Light Combo |
| Shipping | Same-Day from Boise, ID | Slow Boat from Overseas | Often Drop-Shipped, Delays Possible |
| Lifespan/Durability | Designed for Regular Use | Prone to Cracking/Warping | Built for Extreme Duty |
| Price | $44.99 | $25 – $40 | $120 – $250+ |
The 578 occupies a unique middle ground. It’s significantly more robust and reliable than the no-name Kydex you find on Amazon, offering a real retention system those holsters lack. Against Safariland’s own premium 7TS ALS line, you’re giving up modularity (like adjustable ride/cant and hood options) and the slightly faster thumb-release ALS system, but you’re saving a substantial amount of money for a holster that still provides active, trustworthy retention.
Safariland 578 GLS Pro-Fit Holster: Pros and Cons
Pros:
- ✅ Authentic Safariland GLS Retention: You get the same proven, intuitive locking mechanism found on more expensive models. It works, and it’s secure.
- ✅ Excellent Value Proposition: For under fifty dollars, you get a holster from a top-tier duty brand. The price-to-performance ratio is outstanding.
- ✅ Multi-Model Fit: One holster works with your Glock 17, 19, and the common variants. This future-proofs your purchase.
- ✅ Durable, Simple Design: Fewer moving parts than a modular system means fewer potential failure points. The construction is tough.
- ✅ Ready to Ship: We keep these in stock in Boise and ship the same day you order.
Cons:
- ❌ Fixed Ride Height & Cant: You cannot adjust the holster’s angle or how high it sits on your belt. If the fixed position doesn’t work for your body or draw, this isn’t the holster for you. For a modular OWB system, see our holster category for ALS options.
- ❌ Right-Hand Draw Only: Safariland produces this model for right-handed shooters. Lefties will need to look for a different model.
- ❌ Belt Loop Only: It comes with a fixed belt loop. If you need a paddle attachment or a mounting platform for a molle/paddle system, you’ll need a different holster.
Who Should Buy the Safariland 578 GLS Pro-Fit Holster?
Buy it if: You are a right-handed Glock 17/19 owner looking for a straightforward, no-fuss OWB holster with legitimate active retention for range use, training classes, or outdoor activities. It’s ideal for the shooter who appreciates Safariland’s engineering but doesn’t require the modularity of their top-tier systems. If you want a holster you can put on your belt and forget about, knowing your pistol is secure, this is a prime candidate.
Skip it if: You require adjustable cant or ride height, are a left-handed shooter, need a paddle attachment, or are looking for a concealed carry holster (this is an OWB design). For concealed carry, browse our IWB holster selection. Also, if you run an optic and need a dedicated optic-cut hood, you’ll want to look at Safariland’s RDS-specific models.
Frequently Asked Questions
Will this holster fit my Glock 19 with a Streamlight TLR-7A?
Yes. The multi-fit design of the Safariland 578 GLS Pro-Fit Holster accommodates the Glock 19 with common compact weapon-mounted lights like the Streamlight TLR-7A and TLR-1 HL. The mold has an open bottom design that clears the light.
How do I adjust the retention on the GLS holster?
Retention is adjusted with a 3/32″ hex key. On the outside of the holster body, you’ll find a hex screw. Turning it clockwise increases retention tension, counter-clockwise decreases it. Adjust it until you have a firm, positive lock that releases smoothly with proper finger pressure on the lever.
Is the GLS retention system secure enough for active use?
Absolutely. The Grip Lock System is a proven, duty-rated active retention mechanism. It is designed to keep the pistol securely holstered during movement, but allows for a rapid, intuitive draw when you apply the release. It is not a Level III retention holster, but it provides a significant security upgrade over passive friction-only holsters.
Does it work with optics like a Holosun 507C?
The holster has an open top/sight channel that will clear most suppressor-height sights and many red dot optics. However, it does not have a dedicated hood to protect the optic itself. For a holster with a built-in optic hood, you would need to look at Safariland’s RDS-specific models.
Can I use this holster on a 1.5″ belt?
The fixed belt loop is designed for a 1.75″ duty/tactical belt. A 1.5″ belt will fit but will have some side-to-side play, which can affect draw consistency. For optimal performance, use it with a 1.75″ belt.
Where can I buy a Safariland 578 GLS Pro-Fit Holster online?
You can purchase the Safariland 578 GLS Pro-Fit Holster for Glock 17/19 right here at Glockswitchstore (glockswitchstore.com). We are an authorized retailer, and every holster ships from our warehouse in Boise, Idaho.
What is the shipping time?
We process and ship orders the same business day they are placed when ordered before 2 PM Mountain Time. From our Boise, ID location, shipping typically takes 2-5 business days to most continental US addresses.
✅ In stock — ready to ship today
✅ Same-day shipping from Boise, ID
✅ Discreet packaging
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About this review: This assessment is based on hands-on evaluation and over a decade of industry experience fitting shooters with the right gear. We focus on factual performance, construction




Erica B. (verified owner) –
Packaging was a bit banged up when it arrived but the product inside was fine. Would’ve liked better packing.
Christina M. (verified owner) –
Better than what I got from Amazon last time.
Zach T. (verified owner) –
Everything arrived in perfect condition.
Josh F. (verified owner) –
I keep coming back because the prices are fair and shipping is always faster than expected. Good customer experience all around.
Diana L. (verified owner) –
This is a solid piece of kit. Highly recommend.
Adam W. (verified owner) –
Took a little longer to ship than I expected. Product itself is great though, fit my Glock 43X perfectly.
Tony G. (verified owner) –
Second time ordering from here. Always reliable.