PROMAG SMI 31 a 9-round magazine for the Smith & Wesson Shield in .40 caliber. Constructed from heat-treated blued-steel components molded from ProMag rproprietary TECHNAPOLYMER and their anti-fatigue spring so you can keep the magazine loaded and ready for up to six years without concern. ProMag magazines are made in Phoenix Arizona and come with a lifetime warranty.
ProMag Steel Handgun Magazine S&W M&P Shield .40 S&W Blued 9/rd
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ProMag Steel Handgun Magazine S&W M&P Shield .40 S&W Blued 9/rd
$21.86
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🚚 Shipping Information
Non-FFL Items
✅ Ships directly from our distributor
✅ Arrives in 3–7 business days
FFL Items (Firearms & Restricted Products)
📦 Must ship to us first due to manufacturer restrictions
⚡ Minimal delay — we ship it out as soon as we receive it
📍 Delivered to your chosen local FFL or available for pickup with us
📅 Total time: 5–10 business days including transfer or pickup scheduling
Quick FAQ – Blackbox Ballistics
Prices & Sales – We price with a standard percent over cost unless MAP restrictions apply. We often run sales, and if you see a better price, give us a shot at meeting or beating it.
Inventory – We’re not a full brick-and-mortar store, so most items ship from distributors. Sometimes we have products in stock — especially popular ammo for pickup day.
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