AR-15 20 Rd .223/5.56 Stainless Steel Magazine

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Product Overview

Cannot ship to the following states:

CA, CT, HI, MD, MA, NY, NJ,CO and Cook County, IL.

Stainless Steel Body:

Our AR-15/M4/M16 Stainless Steel magazines are constructed with the highest levels of quality that guarantees durability and longevity! Our magazines are manufactured 100% start to finish in the USA using “.020” gauge 410 Stainless-Steel Alloy that is heat treated for superior strength, and lasting endurance. Their Stainless-Steel construction means they won’t swell in heat or crack in the cold, making a more reliable alternative to polymer magazines. This is done all while maintaining that undeniably good look.

Available Coatings:

Our durable, wear-in, not wear off, coating (Marlube) was developed directly from our aerospace roots. These Marlube coatings offer supreme performance, protection, and lubricity for your magazine. The more you use it, the better it performs. Our Stainless-Steel AR-15 mags come in two colors, Black Marlube as well as Flat Dark Earth. These Marlube coatings offer supreme performance and protection both to yourself and to your magazine.

Your #1 choice for reliability, durability, and superiority!

Assembly Components:

  • 410 Series Stainless Steel Body, Heat Treated
  • Chrome Silicon Springs
  • Enhanced Anti-tilt Polymer Followers with PTFE
  • 300 Series SS Floor plate with Black Oxide Coating for Corrosion Resistance

Warranty Information

Our Limited Lifetime Warranty covers defects in materials and workmanship under normal use, for ASC branded products with proof of purchase. ASC will exchange it for identical product or issue an ASC credit.


(3 reviews) Write a Review

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  • 5
    Stainless steel magazine

    Posted by Richard Jensen on Sep 28th 2021

    Very nice fits great, I've already ordered 2 more and will be ordering more

  • 5
    Excellent Magazines

    Posted by Douglas on Jul 8th 2021

    I have several of these, and never had a malfunction. The more you buy, the lower the cost per magazine. ASC makes things really easy.

  • 5
    20 Round Steel Magazine

    Posted by Randy on Oct 23rd 2020

    Quality product...durable, well the traditional look and fit...fits my Smith & Wesson AR-15 perfectly...after 400 rounds through 8 of these magazines...not one problem to report...great product...will be purchasing more.