Out of stock
Promag Smi12 8Rd 45 Acp Fits S&W 645/4506/4566/4586 Blued Steel
$18.29
If you run a Smith & Wesson 645, 4506, 4566, or 4586 in .45 ACP, you know that reliable magazines are as important as the gun itself. The Promag SMI12 8-round magazine is purpose-built for these classic S&W .45 single-stack pistols, giving you a trusted spare or backup mag that feeds the same round count the platform was designed for. Whether you're stocking up for the range, serious practice, or defensive carry, this blued-steel magazine is built to last with materials and construction that respect the heritage of your firearm.
Promag engineered this .45 ACP magazine with heat-treated blued steel to match the finish and durability of your S&W pistol. The follower lock-plate keeps rounds stacked reliably, while the polymer base-plate—molded from DuPont Zytel—won't rust or corrode and provides a solid feel when seating the mag. It's a straightforward, no-nonsense spare that experienced shooters and S&W enthusiasts reach for when they need confidence in their magazine lineup.
Quality aftermarket magazines are essential insurance for any centerfire pistol, and having multiple mags on hand means more trigger time and fewer frustrations. The SMI12 fits the bill for shooters who value American-made reliability and don't settle for questionable third-party gear.
Key Features
- 8-round capacity for S&W .45 ACP single-stack pistols
- Heat-treated blued steel construction matches your firearm's finish
- Polymer follower lock-plate and base-plate (DuPont Zytel) for durability and corrosion resistance
- Compatible with S&W models 645, 4506, 4566, and 4586
Specifications
| Brand | Promag |
| Capacity | 8 rounds |
| Caliber | .45 ACP |
| Material (Body) | Heat-treated blued steel |
| Follower/Base Plate Material | DuPont Zytel polymer |
| Fits | S&W 645, 4506, 4566, 4586 |
Frequently Asked Questions
Will this Promag magazine fit my S&W .45 pistol?
Yes—the SMI12 is designed to fit S&W models 645, 4506, 4566, and 4586. If you own one of these single-stack .45 ACP pistols, this magazine is a direct fit.
What's included with the magazine?
You receive the magazine itself with its heat-treated blued-steel body, polymer follower lock-plate, and polymer base-plate. No additional components are included.
Is this a quality spare mag for regular range use?
Yes. Promag magazines are a reliable choice for shooters who need dependable spare mags. The heat-treated steel and quality polymer components are built to handle regular loading, firing, and cleaning without degradation.
