CMMG Echo 25-Round .22LR Magazine - Black Steel (22BA64E)

The CMMG Echo 25-round .22LR magazine is a black steel magazine purpose-built for the CMMG Echo conversion system. If you run an AR-platform rifle in 5.56/.223 and want an affordable way to practice, plink, or train with rimfire, the Echo conversion kit pairs with this magazine to feed reliable, consistent .22LR rounds downrange. The 25-round capacity gives you solid trigger time between reloads without the bulk or cost of centerfire practice sessions.

Built from steel construction, this magazine is engineered to work within the CMMG Echo platform. Rimfire magazines live a harder life than centerfire—feeding tiny, inconsistent rounds through tight tolerances—so CMMG designed this one with anti-jam geometry in mind. For best results with your Echo system, pair it with 36-grain plated nose ammunition and ensure your host rifle uses a round-style hammer (notched hammers can cause feeding issues with rimfire).

Whether you're setting up a dedicated trainer rifle, building a second upper for your AR, or just looking to shoot more while keeping ammo costs down, a reliable 25-round .22LR magazine is the foundation of any Echo build. Keep a few on hand so you're never caught short on magazine availability.

Key Features

• 25-round capacity for extended shooting sessions
• Black steel construction sized for .22LR rimfire
• Designed for use with the CMMG Echo conversion system
• Anti-jam geometry for reliable feeding

Specifications

Frequently Asked Questions

What rifle does this magazine work with?

This magazine is designed for the CMMG Echo .22LR conversion system, which converts most 5.56/.223 AR-platform rifles to shoot .22LR. It feeds .22LR ammunition into the Echo bolt carrier group conversion.

What type of .22LR ammunition works best?

For best performance with the CMMG Echo system and this magazine, use 36-grain plated nose .22LR ammunition. Other loads may function, but this weight and bullet style have proven most reliable in the Echo platform.

Do I need a special hammer for reliable feeding?

Yes—use a round-style hammer with your Echo conversion. Notched hammers can cause feeding issues with rimfire, so check your host rifle's hammer style before running the conversion and magazine together.

How many magazines should I have?

That depends on your shooting plans. With 25 rounds per magazine, having at least two or three on hand lets you shoot longer without interruption. We recommend keeping extras available.