
Availability: In Stock
The Tandemkross Ruger Mark IV 22/45 MarkPRO Magazine Bumper is a practical upgrade for shooters who run competition or high-round-count practice sessions on their Ruger .22 pistols. The factory Mark IV 22/45 magazine has a flush bottom that can make full seating inconsistent—sometimes the mag doesn't seat fully on the first push, leaving you with a firearm that won't chamber the first round when you need it most. This two-pack of bumpers solves that problem by giving you a positive, tactile reference point to ensure the magazine seats completely every time, while also providing a grab point for quick, confident mag changes.
Built from DuPont Zytel nylon polymer, the MarkPRO bumpers are engineered to withstand hard use and repeated cycles. The material is tough enough for the demands of the range or competition, yet has enough give to absorb impact if you drop a loaded magazine on concrete. Installation takes seconds with the included Phillips head screws—no gunsmithing required, and you can remove them just as easily if you ever want to return your mags to stock configuration.
The bumpers fit Ruger Mark II 22/45, Mark III 22/45, Mark III 22/45 Lite, Mark IV 22/45, Mark IV 22/45 Lite, and Mark IV 22/45 Tactical models. Whether you're chasing accuracy at the range, training for self-defense, or competing in rimfire events, consistent magazine seating is non-negotiable—this is a straightforward way to remove that variable from the equation.
| Quantity | 2 bumpers |
| Material | DuPont Zytel nylon polymer |
| Installation | Phillips head screws (included) |
| Compatibility | Ruger Mark II 22/45, Mark III 22/45, Mark III 22/45 Lite, Mark IV 22/45, Mark IV 22/45 Lite, Mark IV 22/45 Tactical |
The MarkPRO bumpers are compatible with Ruger Mark II 22/45, Mark III 22/45, Mark III 22/45 Lite, Mark IV 22/45, Mark IV 22/45 Lite, and Mark IV 22/45 Tactical models. They attach to factory Ruger magazines for these pistols.
Installation is straightforward: attach the bumpers to the bottom of your factory Ruger magazine using the included Phillips head screws. No tools beyond the screw driver are needed, and the entire process takes just seconds per magazine.
The factory Mark IV 22/45 magazine has a flush bottom, which can make it difficult to seat fully in the magwell on the first try. A half-seated magazine won't chamber the first round—a critical issue in competition or defensive scenarios. The bumper ensures complete seating every time and gives you a convenient grip point for quick mag changes.
Yes. The bumpers are held in place with Phillips head screws and can be removed and reattached whenever you choose, so your magazines can return to their original configuration at any time.

SKU: 197549905 • Weight: 0.1oz





Availability: In Stock
The Tandemkross Ruger Mark IV 22/45 MarkPRO Magazine Bumper is a practical upgrade for shooters who run competition or high-round-count practice sessions on their Ruger .22 pistols. The factory Mark IV 22/45 magazine has a flush bottom that can make full seating inconsistent—sometimes the mag doesn't seat fully on the first push, leaving you with a firearm that won't chamber the first round when you need it most. This two-pack of bumpers solves that problem by giving you a positive, tactile reference point to ensure the magazine seats completely every time, while also providing a grab point for quick, confident mag changes.
Built from DuPont Zytel nylon polymer, the MarkPRO bumpers are engineered to withstand hard use and repeated cycles. The material is tough enough for the demands of the range or competition, yet has enough give to absorb impact if you drop a loaded magazine on concrete. Installation takes seconds with the included Phillips head screws—no gunsmithing required, and you can remove them just as easily if you ever want to return your mags to stock configuration.
The bumpers fit Ruger Mark II 22/45, Mark III 22/45, Mark III 22/45 Lite, Mark IV 22/45, Mark IV 22/45 Lite, and Mark IV 22/45 Tactical models. Whether you're chasing accuracy at the range, training for self-defense, or competing in rimfire events, consistent magazine seating is non-negotiable—this is a straightforward way to remove that variable from the equation.
| Quantity | 2 bumpers |
| Material | DuPont Zytel nylon polymer |
| Installation | Phillips head screws (included) |
| Compatibility | Ruger Mark II 22/45, Mark III 22/45, Mark III 22/45 Lite, Mark IV 22/45, Mark IV 22/45 Lite, Mark IV 22/45 Tactical |
The MarkPRO bumpers are compatible with Ruger Mark II 22/45, Mark III 22/45, Mark III 22/45 Lite, Mark IV 22/45, Mark IV 22/45 Lite, and Mark IV 22/45 Tactical models. They attach to factory Ruger magazines for these pistols.
Installation is straightforward: attach the bumpers to the bottom of your factory Ruger magazine using the included Phillips head screws. No tools beyond the screw driver are needed, and the entire process takes just seconds per magazine.
The factory Mark IV 22/45 magazine has a flush bottom, which can make it difficult to seat fully in the magwell on the first try. A half-seated magazine won't chamber the first round—a critical issue in competition or defensive scenarios. The bumper ensures complete seating every time and gives you a convenient grip point for quick mag changes.
Yes. The bumpers are held in place with Phillips head screws and can be removed and reattached whenever you choose, so your magazines can return to their original configuration at any time.
SKU: 197549905 • Weight: 0.1oz
