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Magpul

Magpul MAG559-BLK PMAG GEN M3 223 Rem,5.56 NATO AR15, M4 10rd Detachable Magazine

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

10-round Detachable

Magazine for AR15/M4 compatible weapons

Chambered 5.56x45

NATO and .223 Remington

Polymer Construction

A black finish

Long-life Stainless

Steel spring and four-way anti-tilt

Flared Floorplate

Aids extraction, handling, and drop

$15.99
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SKU: MAG559-BLK-873750006192

Overview

Built for AR-15 and M4 compatible rifles, this 10-round polymer magazine is intended for shooters who want a compact option for 5.56x45 NATO and .223 Remington setups. It includes a long-life stainless steel spring, a four-way anti-tilt follower, and a flared floorplate designed to support handling and disassembly. A redesigned bolt catch notch, over-travel stop, and included impact/dust cover add practical features for use and storage, while the GEN M3 is optimized for Colt-spec platforms and also fits a range of compatible weapons.

Why Hunters Choose the Magpul

Polymer Construction

A long-life stainless steel spring

Flared Floorplate

Aids extraction and handling while

Redesigned Bolt

Catch notch provides increased bolt

Over-travel Stop

Helps prevent over-insertion on compatible

Included Impact/dust

Cover helps minimize debris intrusion

Key Features

  • 10-round detachable magazine for AR15/M4 compatible weapons
  • Chambered for 5.56x45 NATO and .223 Remington
  • Polymer construction with a black finish
  • Long-life stainless steel spring and four-way anti-tilt follower
  • Flared floorplate aids extraction, handling, and drop protection
  • Included Impact/Dust Cover helps minimize debris intrusion during storage and transit
  • Redesigned bolt catch notch and over-travel stop support compatible operation

Best Used For

  • AR-15 or M4 owners needing a 10-round magazine for range use or compliance-focused setups
  • Hunters using compatible 5.56 NATO or .223 Rem platforms who want a compact magazine option
  • Shooters who value easy magazine handling during loading, unloading, and storage
  • Users seeking a magazine with an included dust cover for transport and debris protection
  • Owners of compatible rifles beyond AR-15/M4 platforms, including listed supported models

Specifications

Blade FinishBlack
Bolt Catch NotchRedesigned bolt catch notch
Caliber223 Rem, 5.56 NATO
Capacity10
Country Of OriginUSA
Dust CoverIncluded pop off Impact/Dust Cover
FloorplateFlared floorplate
FollowerFour-way anti-tilt follower
MaterialPolymer
ModelPMAG
Model FitAR-15, M4
Over Travel StopYes
SpringLong-life stainless steel spring

Pros

  • Polymer construction with a long-life stainless steel spring and four-way anti-tilt follower
  • Flared floorplate aids extraction and handling while adding improved drop protection
  • Redesigned bolt catch notch provides increased bolt catch clearance
  • Over-travel stop helps prevent over-insertion on compatible weapons
  • Included Impact/Dust Cover helps minimize debris intrusion during storage and transit
  • Optimized for Colt-spec AR15/M4 platforms, with compatibility across additional weapons

Considerations & Trade-offs

  • Limited to 10 rounds, so it is not intended for users who want higher-capacity magazine options.
  • The GEN M3 is optimized for Colt-spec AR15/M4 platforms, so fit and function may vary on other compatible firearms.
  • The included Impact/Dust Cover is meant for storage and transit, adding a small extra step when preparing the magazine for use.
  • Polymer construction and the flared floorplate are practical features, but they may not suit buyers who prefer a different magazine material or profile.

Suggested Comparisons

  • AR-15/M4 compatible magazines
  • 10-round detachable magazines
  • Polymer rifle magazines
  • Magazine accessories and dust covers

Suggested Accessories

  • Magazine pouch
  • Dust cover
  • Cleaning kit
  • Range bag

Frequently Asked Questions

Is this magazine compatible with AR-15 and M4 rifles?

Yes. The product data lists model fit as AR-15 and M4, and notes that the GEN M3 is optimized for Colt-spec AR15/M4 platforms.

What caliber is this magazine made for?

It is listed for 5.56x45 NATO and .223 Remington, with specifications showing .223 Rem and 5.56 NATO.

How many rounds does it hold?

The specifications list a capacity of 10 rounds.

Does it include a dust cover or storage cover?

Yes. The long description says an included pop off Impact/Dust Cover can be used to help minimize debris intrusion and protect the top cartridge during storage and transit.

What material is the magazine body made from?

The product is described as a polymer magazine.