Confirmed Fitment
S&W Mod.41 Magazine Loader
The S&W Mod.41 is confirmed to fit the Super Thumb STSW, the loader ADCO builds for .22 rimfire target-pistol magazines. It loads S&W Mod.41 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
S&W Mod.41 loader — common questions
Which Super Thumb fits the S&W Mod.41?
The S&W Mod.41 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 Mod.41 use?
The Super Thumb STSW is built for .22 rimfire target-pistol magazines, which is the class the S&W Mod.41 uses.
Will the same loader work for my other S&W pistols?
Often, yes — many S&W models share the same magazine class. Check the other S&W fits listed below, or use the Model Finder to confirm your exact model before ordering.
Is the S&W Mod.41 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 S&W Mod.41. Every Super Thumb is backed by a lifetime warranty.