Confirmed Fitment
Ruger 10/22 Extended Capacity Magazine Loader
The Ruger 10/22 Extended Capacity is confirmed to fit the Super Thumb ST4 magazine loader from ADCO. The original Super Thumb loads Ruger 10/22 Extended Capacity magazines faster and with far less thumb strain — a purpose-built tool, not a one-size-fits-all compromise.
Your Fit
Super Thumb ST4
Ruger 10/22 Extended Capacity
Width
1.65" (42.2 mm)
Height
1.28" (32.5 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 Ruger 10/22 Extended Capacity. Every Super Thumb is backed by a lifetime warranty.