Description
Glockswitchstore is a Boise, ID-based retailer specializing in Glock parts and accessories. The ETS 31-Round Extended Magazine is a high-capacity, translucent polymer magazine engineered for Glock 9mm pistols. Its primary advantage is delivering reliable, high-volume capacity at a price point that makes sense for serious training. Available now for $22.99 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 2026
What’s the Verdict on the ETS 31-Round Extended Magazine?
After handling and testing hundreds of magazines over the years, I can tell you the ETS 31-round extended magazine for Glock 9mm pistols fills a specific role. It’s a purpose-built tool for high-volume range sessions, training drills, and as a reliable backup. You’re not paying for a premium, duty-grade magazine here; you’re investing in a functional, transparent magazine that lets you see your round count and performs consistently where it counts. For the price, it’s a solid piece of engineering that does exactly what it promises.
What Are the Key Features of This ETS Magazine?
ETS designs their magazines with a shooter’s practical needs in mind. Here’s what sets this model apart.
- 31+1 Round Capacity: The extended length provides a significant ammunition reserve, ideal for extended range time or specific training scenarios where frequent reloads interrupt your flow.
- Translucent Polymer Construction: This isn’t just for looks. The clear body allows for instant visual confirmation of your remaining rounds. No more guessing or performing a press check mid-string.
- Anti-Tilt Follower: This is a critical internal component. The anti-tilt design promotes reliable feeding by keeping the cartridge stack aligned properly, reducing the chance of a feed malfunction.
- Glock-Compatible Baseplate: The magazine uses a standard Glock-style baseplate, which means it’s compatible with many aftermarket extensions or tools you might already own.
- Aggressive Texturing: The lower portion of the magazine body features a textured surface. This gives you a positive grip for magazine changes, even with wet or gloved hands.
What Are the Full Specifications?
| Specification | Detail |
|---|---|
| Product Type | Extended Capacity Magazine |
| Material | Translucent Polymer (Body), Steel (Spring & Follower) |
| Manufacturing | Injection-Molded Polymer, CNC Machined Components |
| Finish | Matte, Non-Reflective Polymer |
| Hardness/Quality | Engineered Polymer, Heat-Treated Spring |
| Compatibility | Glock 9mm Pistols (G17, G19, G26, G34, etc.) & Compatible Platforms |
| Installation/Usage | Drop-in Compatible, Loads to 31 Rounds of 9mm Luger |
| Weight | Approx. 4.8 oz (Unloaded) |
| Dimensions | Approx. 8.9″ Length x 1.3″ Width x 1.0″ Thickness |
| Country of Origin | United States |
| Condition | New, Factory Fresh |
| SKU | ETS-31-9MM |
How Does the ETS Magazine Compare to Other Options?
| Feature | ETS 31-Round Magazine | Budget Import Magazine (~$60-80) | Premium Brand Magazine (~$250+) |
|---|---|---|---|
| Material | Translucent US Polymer | Opaque Polymer, Often Generic | Reinforced Polymer or Steel |
| Quality | Consistent, Good Fit & Finish | Variable, Often Rough Edges | Exceptional, Tight Tolerances |
| Compatibility | Designed for Glock Spec | May Require Fitting | Guaranteed Drop-In Fit |
| Shipping | Same-Day from Boise, ID | Long Lead Times from Overseas | Variable, Often Slower |
| Lifespan/Durability | High for Range/Training Use | Lower, Prone to Feed Lip Wear | Extreme, Built for Duty/Competition |
| Price | $22.99 | $60 – $80 | $250+ |
The comparison shows the ETS magazine’s position clearly. It’s not the cheapest option on the planet—those often have hidden costs in reliability. It’s also not a premium, no-expense-spared competition mag. It sits squarely in the middle: American-made, reliable for its intended use, and priced so you can afford to buy several for a training session.
What Are the Pros and Cons?
Pros:
- ✅ Excellent Value: The performance-to-price ratio is where this magazine shines.
- ✅ Visual Round Count: The translucent body is a genuine functional benefit.
- ✅ Reliable Feeding: The anti-tilt follower design works as advertised for range use.
- ✅ Positive Grip Texture: The texturing provides secure handling during magazine changes.
- ✅ Lightweight: Polymer construction keeps weight down, even when fully loaded.
Cons:
- ❌ Not for Duty Carry: The extended polymer feed lips may wear over extreme long-term use faster than steel. For a dedicated duty or defense magazine, consider a factory Glock magazine or a premium alternative in our magazine section.
- ❌ Size: The 31-round length makes concealment impractical. It’s a range and training tool.
Who Should Buy This ETS 31-Round Magazine?
Buy it if: You’re a Glock owner who spends serious time on the range, participates in training courses that demand high round counts, or wants a clear, affordable magazine for drills and function testing. It’s also a great option for PCC (Pistol Caliber Carbine) owners who use Glock mag lowers and want extended capacity.
Skip it if: You need a magazine for daily concealed carry or duty use where absolute, proven long-term durability under all conditions is non-negotiable. Also, if you require a compact size, the standard 15 or 17-round magazines are a better fit. Check our selection of standard capacity Glock magazines for those needs.
Frequently Asked Questions
Are ETS Glock mags reliable?
For their intended purpose—range training, competition, and high-volume practice—ETS Glock magazines have a strong reputation for reliability. They use a good anti-tilt follower and a robust spring. They are not generally marketed as duty-grade for life-or-death defensive use, but for the vast majority of shooters’ needs, they perform very well and consistently.
What Glock models is this magazine compatible with?
This ETS 31-round extended magazine is compatible with all double-stack 9mm Glock pistols. This includes the Glock 17, 19, 19X, 26, 34, and 45, as well as many Pistol Caliber Carbines (PCCs) that accept Glock-pattern magazines.
Is the magazine easy to load to full capacity?
Like most high-capacity magazines, the last few rounds can require more force. Using a magazine loader is recommended. The spring will break in with use, making loading to 31 rounds easier over time.
Does the magazine come with a warranty?
ETS stands behind their products. The magazine is covered by the manufacturer’s warranty against defects in materials and workmanship. Specific warranty details are provided by ETS.
Where can I buy ETS 31-round extended magazines online?
You can purchase the ETS 31-round extended magazine for Glock 9mm pistols right here at Glockswitchstore (glockswitchstore.com). We stock them in our Boise, Idaho warehouse and ship them same-day on weekdays.
How does it compare to the ETS Glock 43 9-round magazine?
They share the same translucent polymer construction and design philosophy. The primary difference is capacity and size for different pistol models. The Glock 43 magazine is a single-stack, compact magazine, while this is a double-stack, extended magazine for full-size and compact double-stack frames.
What ammunition works best with this magazine?
It is designed for standard 9mm Luger (9x19mm) ammunition. We have found it feeds a wide variety of FMJ (Full Metal Jacket) and JHP (Jacketed Hollow Point) rounds reliably during testing. As with any firearm component, test your chosen defense ammunition thoroughly.
Ready to Order? Here’s What You Can Expect
✅ Same-day shipping from Boise, ID
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
If you need a high-capacity, reliable, and affordable magazine for your Glock 9mm, the ETS 31-round model is a straightforward choice. It does its job without fuss. Add it to your cart now to experience the Glockswitchstore difference: fast shipping from Idaho, no-nonsense service, and gear that works.
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About this review: This assessment is based on hands-on experience with the product, industry knowledge, and direct feedback from our customer base. Our goal is to provide clear, useful information to help you make an informed purchase. We are a retailer, and this page contains affiliate links. Last updated: March 2026
Vanessa K. (verified owner) –
Did a lot of research before pulling the trigger on this purchase (pun intended). Read reviews on 3 different sites, watched YouTube videos, and ultimately went with glockswitchstore.com because of the price and shipping speed. Not disappointed. Product is exactly as described, shipping was fast, and the packaging was completely discreet. Already eyeing a few more items in their Magazines section.
Ashley G. (verified owner) –
Bought this as part of a larger build project. glockswitchstore.com had the best price by a decent margin and shipping was fast. The ETS 31-Round Extended Magazine Glock 9mm itself is well-made — Tight tolerances. Overall this is exactly what I needed. Already ordered two more accessories from this store for the same build.
Daniel S. (verified owner) –
Was worried about fit but it dropped right in on my Glock 45. Works perfectly after a few hundred rounds. Very pleased.
Karen W. (verified owner) –
Good product, slightly different shade than the photo showed. Still works perfectly though.
Chad W. (verified owner) –
I don’t write reviews often but glockswitchstore.com deserves one. The ETS 31-Round Extended Magazine Glock 9mm is exactly what I was looking for. Good build quality, snug fit on my G22, and the price was the best I could find after checking multiple sites. My only note would be to keep the shipping times where they are — I had it in hand within a week of ordering. Will be a repeat customer.
Patrick B. (verified owner) –
My buddy recommended this and he was right.
Monica S. (verified owner) –
Been in the market for a while and finally decided to buy from glockswitchstore.com. I was comparing this against similar products from eBay and decided to take the chance. Glad I did. Arrived in 2 days, well-packaged, and the quality speaks for itself. Installed it on my Glock 26 and ran 249 rounds through it without a single hiccup. This is the real deal.