ADCO ST2 Super Thumb ST2 Mag Loader - Black Polymer, Multi-Caliber Compatibility for Glock, Ruger, Sig
- Firearm Group:
- Handgun
- Firearm Make Fit:
- Glock
- Caliber-Gauge:
- 9mm Luger
Loading high-capacity pistol magazines by hand can be tedious and hard on your thumbs—that's where the ADCO ST2 Super Thumb magazine loader comes in. This multi-caliber mag loader is engineered to take the strain out of topping off magazines for a wide range of popular pistols, from compact carry guns to full-size duty weapons. Whether you're prepping for the range, a competition, or defensive training, the ST2 speeds up your setup and keeps your hands fresh.
Built from durable black polymer, the ST2 is designed to handle oversized 9mm and .45 ACP magazines across multiple platforms. It works with Glock, Ruger SR9, Sig Sauer, and numerous other common pistol brands and models—making it a versatile addition to any shooter's kit who runs multiple firearms. The loader grip sits comfortably in your hand and applies leverage where you need it, reducing the repetitive strain of manual loading, especially when you're working with stiffer springs on fresh mags or high-capacity drums.
If you spend time at the range, in competition, or simply maintain a defensive readiness posture, hand fatigue from loading magazines adds up fast. The ST2 is a small investment that pays dividends in comfort and convenience every time you prepare your ammunition. It's compact enough to toss in a range bag, and the polymer construction is lightweight and weather-resistant for field use.
Key Features
- Multi-caliber compatibility spans common 9mm and .45 ACP pistols
- Works with oversized and high-capacity magazines from major manufacturers
- Durable black polymer construction for reliable, lightweight use
- Reduces hand and thumb fatigue during magazine loading
- Compact, range-bag-friendly design
Specifications
| Brand | ADCO |
| Model | ST2 Super Thumb |
| Type | Magazine Loader |
| Material | Polymer |
| Finish | Black |
| Caliber Compatibility | Multi-Caliber (9mm, .40 S&W, .45 ACP) |
| Magazine Fit | Oversized 9mm/.45 Pistol Mags; Glock, Para, and other platforms |
Frequently Asked Questions
What pistol magazines does the ADCO ST2 loader work with?
The ST2 is compatible with oversized 9mm and .45 ACP magazines from Glock, Ruger SR9, Sig Sauer, Para Ordnance, H&K USP, Kimber, Smith & Wesson M&P, Beretta, and other common platforms. It's designed to handle high-capacity versions from these manufacturers.
Is the ST2 mag loader good for range days or competitive shooting?
Yes. The ST2 is ideal for any shooter who loads multiple magazines regularly—whether you're prepping for practice sessions, competitions, or defensive training. It reduces hand fatigue and speeds up the loading process so you can focus on shooting.
What is the ST2 made of and how durable is it?
The ST2 is constructed from durable black polymer. This material is lightweight, weather-resistant, and built to handle repeated use in field and range environments.
Can I use the ST2 with different caliber magazines?
The ST2 is a multi-caliber loader designed for oversized pistol magazines in common calibers like 9mm, .40 S&W, and .45 ACP. Compatibility depends on the magazine size and shape; it works best with full-size and high-capacity variants from major manufacturers.

