Mean Arms Ar-9 Endomag 9mm 30-Round (3 Pack)

The Mean Arms AR-9 Endomag 9mm 30-round magazines (3-pack) solve a real problem for 9mm AR builders: feeding 9mm rounds through a standard AR-15 magazine well without needing a separate magwell adapter. Instead of forcing a magwell insert into your lower receiver, Mean Arms took a smarter approach—they engineered magazines that work with your existing AR platform. This three-pack gives you the magazine capacity and reliability you need for 9mm AR-9 setups built on Glock or Colt 9mm bolt-carrier groups.

Each magazine in this pack is purpose-built for 9mm feeding and holds 30 rounds. The design eliminates the need for magwell modifications, keeping your AR-9 build cleaner and your lower receiver unchanged. Whether you're running a dedicated 9mm upper on a standard lower or a dedicated 9mm lower, these magazines feed reliably across all major 9mm ammo brands—no picky feeding, no jams from using the wrong magazine solution.

The 3-pack format is practical for serious shooters: keep one loaded for duty or sport shooting, rotate others to the range, and maintain spares at home or in your truck. At 30 rounds per magazine, you get the capacity and firepower that makes 9mm AR builds so appealing for home defense, training, and sport shooting without the bulk or cost of larger pistol-caliber platforms.

Key Features

• 30-round capacity per magazine
• Compatible with Glock and Colt 9mm bolt-carrier groups
• No magwell adapter or lower receiver modification required
• Reliable feeding with all major 9mm ammunition brands
• Three-pack—multiple guns, range sessions, or backup magazines
• Purpose-engineered design for 9mm AR platform feeding

Specifications

Frequently Asked Questions

Do I need a magwell adapter to use these magazines?

No. The Mean Arms AR-9 Endomag magazines are designed to feed directly through a standard AR-15 magazine well without any adapter or lower receiver modification.

What 9mm bolt-carrier groups do these magazines work with?

These magazines are built for use with Glock or Colt 9mm bolt-carrier groups. Confirm your BCG type before purchase.

Will these magazines feed all brands of 9mm ammunition?

Yes. Mean Arms engineered these magazines for reliable feeding with all major brands of 9mm ammo, so you're not locked into premium or specialty ammunition.

Why buy a three-pack instead of individual magazines?

The three-pack is ideal for 9mm AR builders who shoot regularly, maintain multiple guns, or want backup magazines in rotation without buying singles repeatedly.