$21.99
48 in stock
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This ProMag magazine gives M&P .40 owners a straightforward way to add spare capacity to their kit. Built with a heat-treated steel body in blued finish, it holds a full 15 rounds in a double-stack design that feeds from the bottom of the magazine well. The construction approach is time-tested: stamped and welded steel with a chrome-silicon wound spring that's heat-treated for durability. The follower and base plate are molded from DuPont Zytel based polymer, a material that's been used in magazines for years and resists wear from constant loading and unloading.
Nothing fancy here, but nothing wasted either. The blued finish offers decent corrosion resistance for a steel magazine, and the overall design stays compact enough for typical carry setups. This isn't trying to be something it isn't. The magazine is sized to work flush with your M&P .40 grip when fully loaded, and the numbered witness holes let you count rounds at a glance without pulling it out.
ProMag builds these domestically, and every SMIA11 ships with a lifetime manufacturer warranty against defects. If something breaks down from normal use, you're covered. The warranty support is straightforward, which matters when you're relying on a magazine as part of your regular shooting routine.
This magazine exists to solve a real problem for M&P .40 owners, where finding good spare mags used to be tough. It's designed specifically for the full-size double-stack M&P .40, so compatibility is dialed in. Some users report good performance right out of the box, while others have found they need a light breaking in period. A hand cycle test with dummy rounds before taking it to the range is always a solid practice with any new magazine.
This magazine is designed for the full-size double-stack M&P .40 and M&P .40 2.0 models. It will not fit compact or Shield variants of the M&P .40. If you own a compact model, you'll want to check the specific magazine offerings for that frame size.
Most users find these magazines run reliably right out of the box. That said, running a few dry cycles with dummy rounds before your first range trip is standard practice for any new magazine and gives you a chance to check function with your specific gun.
Factory S&W magazines typically cost more but have been refined through years of production. ProMag magazines offer a budget-friendly alternative that uses similar materials and construction methods, though some users report tighter tolerances that may require minor fitting or light use before breaking in smooth.
Yes, every ProMag magazine is backed by a lifetime warranty against manufacturer defects. If you encounter any issues with normal use, you can return it to ProMag for replacement under their warranty program.
| UPC | 708279011368 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | SMI-A11 |
| Brand Fit | S&W |
| Caliber/Gauge | .40 S&W |
| Capacity | 15 |
| Color | Blue |
| Length | 9.1500 |
| Model | |
| Model Fit | M&P |
| Product Type | Magazine |
| Quantity | 1 |
| Shipping Weight | 0.2625 |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (OR) | NO SALE TO OREGON |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
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