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The factory flush-bottom magazines on the Ruger Mark IV 22/45 can be a real pain when you need consistent, positive seating. These Tandemkross MarkPRO bumpers solve that problem by extending the base of your magazines just enough to give you a proper platform to bump them home with the palm of your hand. Whether you're running steel challenge, rimfire competitions, or just want smoother mag swaps at the range, these make a noticeable difference.
Tandemkross engineered these bumpers from tough DuPont Zytel nylon polymer that's practically indestructible. The textured grip surface has lateral ridges that keep things from slipping when you're pulling magazines out of your mag carriers. You get two bumpers per pack, which means you can upgrade multiple magazines without breaking the bank. All of this comes backed by a lifetime guarantee and is proudly made in the USA.
These bumpers drop right onto your factory magazines without any glue, gunsmithing, or special tools. You'll disassemble your magazine the normal way, swap out the base pad for the MarkPRO bumper, and tighten down the included screw. Most people have them installed and ready to shoot in under a minute per magazine. If you've never worked with magazine base pads before, just be aware the spring is under pressure, so some people like to work over a small bag the first time to keep the spring contained.
Beyond the Mark IV 22/45, these bumpers also work perfectly on Mark III 22/45 and Mark II 22/45 magazines. This opens up some options if you've got older magazines lying around that you want to upgrade. The extended base gives you better control when extracting magazines from the mag well, which matters more than you might think when you're under time pressure in a match.
Disassemble your magazine the way you normally would, then simply replace the factory base pad with the MarkPRO bumper and tighten the included screw. There's no glue or gunsmithing required, and installation takes just a minute or two per magazine. Just be mindful that the magazine spring is under pressure when you're working with it.
Yes. The MarkPRO bumpers are compatible with Mark II 22/45, Mark III 22/45, and all Mark IV 22/45 variants including the Tactical and Lite models. This gives you options if you have older magazines you want to upgrade without buying new ones.
The MarkPRO bumpers are made from durable DuPont Zytel polymer with textured lateral ridges for a secure grip. The extended base pad gives you a solid platform for bumping magazines home with your palm, and the textured design prevents slipping when you're pulling magazines out of carriers during reloads.
Older Mark II or Mark III base pads may fit physically, but the MarkPRO bumpers are specifically engineered for the Mark IV magazine well and geometry. Using the correct bumper for your specific model ensures proper seating and a clean fit without gaps.
| UPC | 769498483145 |
|---|---|
| Manufacturer | |
| Color | Black |
| Model | |
| Manufacturer Part Number | 1926N0237BLK1 |
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