Confirmed Fitment
Walther GSP Magazine Loader
The Walther GSP is confirmed to fit the Super Thumb STSW, the loader ADCO builds for .22 rimfire target-pistol magazines. It loads Walther GSP magazines faster and with far less thumb strain — a purpose-built tool, not a one-size-fits-all compromise.
Why rimfire magazines are so fiddly
Rimfire magazines are notoriously finicky — tiny rounds, a stiff follower, and rims that have to sit in the right order. The Super Thumb steadies the follower and lets you drop each round in place instead of fighting the button with a fingernail.
Your Fit
Super Thumb STSW
.22 Type
Walther GSP loader — common questions
Which Super Thumb fits the Walther GSP?
The Walther GSP is a confirmed fit for the Super Thumb STSW. It appears on ADCO’s verified Super Thumb fit chart as an exact match.
What kind of magazine does the GSP use?
The Super Thumb STSW is built for .22 rimfire target-pistol magazines, which is the class the Walther GSP uses.
Will the same loader work for my other Walther pistols?
Often, yes — many Walther models share the same magazine class. Check the other Walther fits listed below, or use the Model Finder to confirm your exact model before ordering.
Is the Walther GSP fit guaranteed?
Every Super Thumb is backed by a lifetime warranty. If you’re not certain, confirm with the Model Finder or call ADCO at 781-935-1799 before you order.
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 Walther GSP. Every Super Thumb is backed by a lifetime warranty.