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ProMag 5.56x45 40 Round AR-15 Magazine, Black

Pro Mag · Magazines

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ProMag 5.56x45 40 Round AR-15 Magazine, Black

Best price

$21.99at Kentucky Gun Co

In stock Lowest in 30 dayschecked Nov 13, 2026

Buy at Kentucky Gun Co

Compare 10 stores

Fits and works with

Caliber
5.56 / .223 · Shop matching ammo

Specifications

Manufacturer
Pro Mag
Color
Black
Platform
AR-15
Caliber
5.56 mm NATO
Material
Polymer

Where to buy

StorePriceAvailabilityBuyAdd to build
Kentucky Gun Co Best price $21.99checked Nov 13, 2026 In stock Buy at Kentucky Gun Co
GunMag Warehouse $26.99checked Nov 13, 2026 In stock Buy at GunMag Warehouse
Ammunition Depot $27.49checked Nov 13, 2026 In stock Buy at Ammunition Depot
OpticsPlanet $40.49checked Nov 13, 2026 In stock Buy at OpticsPlanet
Battlehawk Armory $16.85Salechecked Nov 13, 2026 Check store Buy at Battlehawk Armory
Natchez $17.79checked Nov 13, 2026 Check store Buy at Natchez
Guns.com $17.99Salechecked Nov 13, 2026 Check store Buy at Guns.com
GrabAGun $18.19Salechecked Nov 13, 2026 Check store Buy at GrabAGun
Classic Firearms $18.29checked Nov 13, 2026 Check store Buy at Classic Firearms
Palmetto State Armory $20.19checked Nov 13, 2026 Check store Buy at Palmetto State Armory

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

Lowest in-stock price in the last 30 days: $21.99 at Kentucky Gun Co. Dashed line = out of stock. Tracking since Sep 28, 2026.

Show the prices as a table
StoreLatestLowestHighest
Ammunition Depot$27.49$25.49$27.49
Battlehawk Armory$16.85$15.26$16.85
Classic Firearms$18.29$18.29$18.29
GrabAGun$18.19$18.19$18.19
GunMag Warehouse$26.99$26.99$26.99
Guns.com$17.99$16.99$19.99
Kentucky Gun Co$21.99$21.99$21.99
Natchez$17.79$17.79$17.79
OpticsPlanet$40.49$30.49$40.49
Palmetto State Armory$20.19$18.09$21.99

Since Sep 28, 2026.

About this part

The ProMag 5.56x45 40 Round AR-15 Magazine, Black is a 5.56 / .223 magazine from Pro Mag. It's sold by 10 stores (4 in stock), from $16.85 to $40.49. The lowest in-stock price in the last 30 days was $21.99 at Kentucky Gun Co.

From the manufacturer

ProMag 5.56x45 40 Round AR-15 Magazine, Black - RM-40-SL

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$21.99 at Kentucky Gun Co
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