Find Your Super Thumb
Magazine Loader.
Shop directly from ADCO Arms.
Use the Model Finder to look up your make and model, then choose the Super Thumb that fits your magazine.
View Warranty Terms
Fitment Tool
Does It Fit Your Firearm?
Search by make and model to instantly confirm which Super Thumb fits. All entries sourced from ADCO's verified fit chart.
Enter a make or model above to find your Superthumb fit.
Try: Glock 17, Ruger 10/22, or Beretta 92
Need the full database? Open the full Model Finder →
See It For Yourself
Watch Super Thumb in Action
Real demos from ADCO Arms — see how the original Super Thumb loads faster and protects your thumb.
Super Thumb Speed Loader in Action
Watch how fast the original Super Thumb loads a double-stack magazine — no thumb strain, no fumbling.
Super Thumb Magazine Loader Demo
Side-by-side comparison showing the speed advantage of loading with a Super Thumb versus bare-hand loading.
ADCO Arms — Original Super Thumb
The original, proven design from ADCO Arms. See why shooters have trusted the Super Thumb for decades.
The Lineup
Super Thumb Models
Every Super Thumb is engineered for a specific magazine class. Pick the model that matches your caliber and stack type.
Super Thumb ST1
Most Double-Stack Magazines
Super Thumb ST2
Most Wide Body Double-Stack Magazines
Super Thumb ST3
Most Single-Stack Magazines
Super Thumb ST4
Extended capacity Ruger 10/22 magazines
Super Thumb ST5
Most .380 Double-Stack Magazines
Super Thumb ST6
Most .380 Single-Stack Magazines
The Original Difference
Why Choose the Original Super Thumb?
Imitations cost less for a reason. Here's what you get when you buy directly from ADCO Arms.
The Original — Not a Copy
Super Thumb is made by ADCO Arms Co. Many imitations have followed. Only the original delivers the proven fit and finish shooters trust.
Engineered for Exact Fit
Each model is purpose-built for a specific magazine class — not a one-size-fits-all compromise. 172+ confirmed firearm fits across 33+ manufacturers.
Faster Loading, Less Strain
Reduce thumb fatigue on every range session. The Super Thumb loads rounds quickly and comfortably, whether you're training or competing.
Warranty Support
See the warranty terms for coverage details and how to contact ADCO about a claim.
Confirmed fits for
Common Questions
Frequently Asked
Quick answers before you order.
What fits ST1?
ST1 fits Most Double-Stack Magazines. Confirm exact make/model with the fitment table before purchase.
What are the dimensions of ST1?
ST1 dimensions: 32.5 mm x 21.9 mm (1.29 in x 0.86 in).
How do I get help choosing ST1?
Customers can use the model finder, contact ADCO by phone/email, or submit a form for fitment help before ordering.
What fits ST2?
ST2 fits Most Wide Body Double-Stack Magazines. Confirm exact make/model with the fitment table before purchase.
Order Direct
Ready to Order?
Buy Direct from ADCO.
Find your fit, add it to the cart, and check out securely in minutes. Prefer to talk it through? Call or message us with your make and model and we'll get you the right loader.
Address
128 Ashworth Ave #305, Hampton, NH 03842
Phone
781-935-1799
Dealer Inquiries
Interested in carrying Super Thumb? Contact us directly to discuss wholesale pricing and availability.