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Finding a working magazine for an old High Standard Model B can turn into a real hunt, and that's exactly the gap Triple-K fills with the 405M. This is a 10-round .22 LR single-stack mag built to bring one of these classic hammerless target pistols back to the range instead of leaving it sitting in the safe. The Model B was High Standard's original hammerless design, with roughly 65,000 made between 1932 and 1942, so a fresh magazine is often the difference between a shooter and a wall hanger.
Triple-K builds these in the USA using steel construction with welded seams, a machined follower, and a music wire spring. That combination is what gives the magazine its long service life and smooth feeding. The blued steel body holds up well against handling and helps fend off corrosion, and the flush pinkie-grip floorplate keeps the profile clean and true to the original pistol.
The 405M is made specifically for the High Standard Model B family, which also covers the B-US, HB, and GB variants. If you've got one of these pistols with either the shorter or longer barrel, this magazine is designed to drop in and run. As with a lot of aftermarket mags for older guns, a brand-new one can feel a touch snug at first and tends to break in and smooth out with use, which is normal for tight tolerances on a fresh spring and body.
With parts for guns this old getting harder to track down, having an extra magazine or two on hand is smart insurance. It cuts down on reloading time at the range and keeps you shooting longer between top-offs. For plinking, casual target work, or just keeping a family heirloom alive, the 405M is a straightforward, dependable pickup.
It's designed for the High Standard Model B family, including the B, B-US, HB, and GB variants. These are the early hammerless and external-hammer .22 target pistols High Standard produced from the 1930s into the 1950s. If your pistol is one of these models, the 405M is the right magazine.
No, it's an aftermarket replacement made by Triple-K, a company that specializes in magazines for vintage and obsolete firearms. It's built in the USA with steel construction, welded seams, a machined follower, and a music wire spring. For guns this old, aftermarket mags like this are often the most reliable way to get shooting again since factory originals are scarce.
A brand-new magazine can feel a little snug compared to a worn-in factory original, and that's common with fresh springs and tight tolerances. Most break in and smooth out with regular use and loading cycles. Running it and letting the spring settle usually clears up any initial stiffness.
It holds 10 rounds of .22 Long Rifle in a single-stack layout. That matches the original capacity of the High Standard Model B, so it keeps the pistol true to its intended feed and function.
| UPC | 730745004055 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 405 |
| Capacity | 10-Round |
| Model | |
| Quantity | 1 |
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