Full Lineup
All Super Thumb Loaders
Eight models engineered for different magazine classes — from full-size double-stacks to compact .380 single-stacks. Always use the model finder to confirm your fit.
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
Super Thumb STJR
Ruger, Colt, Browning, High Standard and S&W Mod. 22A/S type magazines
Super Thumb STSW
S&W Mod.41, 4-22, Victory, Walther GSP, Bersa and Firestorm
Best Value
Super Thumb 8-Pack — One of Each
Get all 8 Super Thumb models (ST1–ST6, STJR & STSW) in one order. Perfect for gunsmiths, ranges, and serious collectors.
Always confirm fitment before ordering.
Super Thumb loaders are model-specific. Use the Model Finder or call ADCO Arms at 781-935-1799 to verify your exact firearm and magazine fit.