Confirmed Fitment
Sig 938 Magazine Loader
The Sig 938 is confirmed to fit the Super Thumb ST3 magazine loader from ADCO. The original Super Thumb loads Sig 938 magazines faster and with far less thumb strain — a purpose-built tool, not a one-size-fits-all compromise.
Your Fit
Super Thumb ST3
Single-Stack
Width
1.47" (37.3 mm)
Height
0.65" (16.6 mm)
Not 100% sure? Confirm before you order.
Super Thumb loaders are model-specific. Use the Model Finder to double-check your exact firearm and magazine, or call ADCO Arms and we'll confirm the right loader for your Sig 938. Every Super Thumb is backed by a lifetime warranty.