First Look: Magpul PMAG 10 5.56 AC

by
posted on January 16, 2020
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
magpul-pmag-10-556-ac-magazine-new-2020-f.jpg
As more of today's shooters build or buy guns equipped with chassis systems designed to accept detachable box magazines, they're encountering some issues related to feeding, particularly as it relates to ACIS-pattern stocks and chassis mated with .378" case-head-diameter cartridges like the 5.56 NATO/.223 Rem. To address these issues and provide an affordable option for precision shooters using these calibers, Magpul rolled out its unique PMAG 10 designed for use with 5.56 NATO-sized cartridges and those based on the 5.56 NATO.

The unique shape of the Magpul PMAG 10 5.56 AC has to do with this detachable box-magazine compatibility issue. The top portion of the magazine body is sized to fit standard AICS-pattern magazine wells that were initially designed with short-action rifle cartridges like the .308 Win. in mind, most of which feature a .473" case-head diameter. The magazine also features an offset feed-lip geometry, which helps to solve the bolt-face issue encountered with other AICS-pattern magazines designed for use with 5.56 NATO-based cartridges.

Each Magpul PMAG 10 5.56 AC is constructed using the company's GEN M3 technology, which features a self-lubricating follower, a stainless-steel magazine spring and a constant-curve geometry incorporated into the magazine body that provides seamless feeding and function. Like all of the company's magazines, this PMAG 10 5.56 AC is constructed with polymer, which is designed to provide crush- and impact-resistant protection. One of the other features found in the magazine is the inclusion of a paint-pen dot matrix, which allows users to keep track of multiple magazines for competition and range use.

Magpul's PMAG 10 5.56 AC holds up to 10 rounds of 5.56 NATO or other cartridges with a .378" case head, and the magazine can accept cartridges with a maximum overall length of 2.39". The PMAG 10 5.56 AC measures 5.01" high, 3.05" long and .97" wide. Total weight of the magazine, unloaded, is 2.71 oz. Suggested retail pricing on the PMAG 10 5.56 AC is $39.95. For more information, visit magpul.com.

Latest

Shotshell Basics
Shotshell Basics

Shotshell Basics: Understanding Payloads, Pressures & Performance

A shotgun can be supremely versatile, depending on how it’s loaded. Understanding how shotshells work is difficult, but crucial.

Rock River Arms Celebrates 30 Years in Business

While the company's beginnings go back to 1994, the Rock River Arms story officially started in 1996, meaning that it is celebrating 30 years in business in 2026.

Review: Daniel Defense H9

Is the third time the charm? Daniel Defense has introduced a third version of the Hudson H9 pistol. Smaller, lighter and less radical, it could be “the one.”

Supreme Plus: Ranger Point Precision & Line49 Rifle Henry LASR Conversions

A new collaboration between modern lever-action specialists Ranger Point Precision and Line49 Rifle transforms Henry’s groundbreaking Lever Action Supreme Rifle.

The Armed Citizen® June 15, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

NRA Launches "ARC Across America" National Challenge

The National Rifle Association is inviting Americans, coast-to-coast, to celebrate the 250th anniversary of the United States—and the freedom for which it stands—by exercising their rights by participating in the "ARC Across America" National Challenge.

Interests



Get the best of American Rifleman delivered to your inbox.