Image unavailable
ProMag AR-15 Magazine 5.56x45mm NATO / .223 Remington 40 Rounds Technapolymer
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$19.99
View on Sportsmans Guide
You'll be taken to Sportsmans Guide to complete your purchase.
Hunter's Outpost earns a commission from affiliate links at no extra cost to you.
SKU: WX2*0706256
Overview
Built for AR-15 style rifles chambered in 5.56x45mm NATO or .223 Remington, this replacement magazine is intended for shooters who want a 40-round option for range sessions or other high-volume use. Its Technapolymer construction is paired with an anti-tilt roller follower and chrome-silicon spring to support smooth feeding in a straightforward, purpose-driven design. The larger capacity may be useful when fewer reloads are preferred, while still keeping the magazine focused on compatibility with the specified platform and chamberings.
Why Hunters Choose the Promag
Ar-15 Style
Rifles chambered in 5.56x45mm NATO
40-round Capacity
Supports extended shooting sessions
Technapolymer Construction
Adds durable magazine body material
Anti-tilt Roller
Follower helps promote smooth feeding
Chrome-silicon Spring
Is described as anti-fatigue
Key Features
- Fits AR-15 style rifles chambered in 5.56x45mm NATO / .223 Remington.
- 40-round capacity for extended magazine loadout.
- Technapolymer construction for a durable magazine body.
- Anti-tilt roller follower supports smooth feeding action.
- Chrome-silicon spring is described as anti-fatigue.
- Replacement magazine from ProMag for AR-15 use.
Best Used For
- AR-15 owners needing a 40-round magazine for 5.56x45mm NATO or .223 Remington rifles
- Range shooters wanting a replacement magazine with anti-tilt roller follower and chrome-silicon spring
- Users looking for Technapolymer construction in a magazine for AR-15 style rifles
- Shooters who prefer a higher-capacity magazine for extended range sessions
Specifications
| Caliber | 5.56x45mm NATO / .223 Remington |
|---|---|
| Capacity | 40 rounds |
| Compatible Firearm | AR-15 style rifles |
| Follower | Anti-tilt roller follower |
| Material | Technapolymer |
| Spring | Chrome-silicon spring |
Pros
- Designed for AR-15 style rifles chambered in 5.56x45mm NATO or .223 Remington
- 40-round capacity supports extended shooting sessions
- Technapolymer construction adds durable magazine body material
- Anti-tilt roller follower helps promote smooth feeding
- Chrome-silicon spring is described as anti-fatigue
Considerations & Trade-offs
- 40-round capacity offers more rounds than a standard magazine, which may be useful for some applications but adds bulk compared with lower-capacity options.
- Designed for AR-15 style rifles chambered in 5.56x45mm NATO / .223 Remington, so it is not a universal magazine across other platforms or calibers.
- Technapolymer construction may be a practical choice for durability, but it is still a polymer-based magazine rather than a metal-bodied option.
- The product description highlights reliability and smooth-feeding features, but real-world performance can still depend on the rifle and ammunition used.
Suggested Comparisons
- AR-15 magazines
- Standard-capacity rifle magazines
- Polymer rifle magazines
- Extended-capacity magazines
Suggested Accessories
- Magazine pouch
- Magazine loader
- Cleaning kit
- Range bag
Frequently Asked Questions
What rifles and cartridges is this magazine made for?
It is designed for AR-15 style rifles chambered in 5.56x45mm NATO or .223 Remington.
How many rounds does it hold?
It has a 40-round capacity.
What materials or components are listed for the magazine?
The source data lists Technapolymer construction, an anti-tilt roller follower, and an anti-fatigue chrome-silicon spring.
Is this a replacement magazine or a factory magazine?
The product is described as a ProMag replacement magazine.
Does the product description mention any performance details beyond feeding reliability?
The description says it is intended to provide guaranteed reliability and smooth-feeding action, but it does not provide further verified performance details.