Adco Super Thumb Jr Loader 22lr Rug

The Adco Super Thumb Jr is a compact magazine loading tool that takes the pain out of topping off rimfire pistol magazines. Anyone who has spent a range day pressing tiny .22 LR rounds against a stiff follower spring knows how quickly sore thumbs cut the fun short. This model is designed to accept most 22A/S type magazines, covering a wide range of popular rimfire pistols.

What the Adco Super Thumb Jr fixes on a rimfire range day

Reloading magazines is easily the least enjoyable part of a shooting session, and rimfire makes it worse. The rounds are small, the rims are thin, and there is barely any surface for a thumb to push against.

Multiply that by the volume a .22 pistol invites and you have a genuine problem. Nobody buys a rimfire pistol to spend the afternoon loading it.

The Adco Super Thumb Jr gives your thumb the leverage and grip surface to load rounds cleanly instead of fighting the spring one cartridge at a time. That is the whole pitch, and it works.

It also cuts down on fumbled rounds. Dropping .22 cartridges into the gravel because your thumb slipped is its own kind of frustration, and a proper grip surface mostly ends that.

Features of this rimfire loading tool

Small, cheap, and immediately useful.

• Fits most 22A/S type rimfire pistol magazines.
• Provides a proper grip surface for small .22 LR cartridges.
• Makes reloading noticeably easier and faster.
• Small enough to live in a range bag pocket permanently.
• Nothing to adjust, charge, or maintain over its lifetime.
• Priced so low there is no reason not to keep one with every rimfire pistol you own.

Specifications and compatibility

The fitment covers most 22A/S type magazines, which is the pattern behind a large share of the rimfire pistols people actually shoot in volume. If your pistol feeds from that family of magazines, this is the correct tool rather than a generic one that half works.

Construction is deliberately simple. With no springs, hinges, or moving components, there is nothing that fails after years of getting knocked around under boxes of ammunition in the bottom of a bag.

The Adco Super Thumb Jr is also the smaller sibling in the family for a reason. Rimfire magazines are narrower and shorter than centerfire pistol mags, and a tool scaled to them seats cleanly instead of wobbling on an oversized footprint.

Nothing about the tool touches the feed lips or the follower path. It works from the outside of the magazine, so it cannot affect how the magazine feeds in the pistol.

Practical use, care, and why it stays in the bag

Seat the loader, drop a round in, and press it down and back. Easier loading means more shooting and less thumb wrestling between strings, and the difference is obvious inside the first magazine.

Keep it wiped clean and store it with your rimfire gear so it never gets left at home. It also makes an excellent teaching aid, because a new shooter who can load their own magazine comfortably stays engaged far longer. Add spare magazines from our magazines and upgrades section and you can preload an entire session in minutes.

Bulk rimfire ammunition and an Adco Super Thumb Jr go together naturally. When you buy .22 by the brick, the only thing standing between you and a long afternoon of shooting is how fast the magazines fill.

As Adco cheerfully suggests, you may want to bring extra ammo so you do not run out, since the loading bottleneck disappears entirely.

For a category of shooting built around cheap, high round count fun, removing the one frustrating step is a bigger improvement than the price suggests. Buy one for each rimfire pistol and stop thinking about it. Ships direct to your door, no FFL required.