Shield Arms S&W M&P 2.0 +5 Mag Ext Black

The Shield Arms S&W M&P 2.0 +5 magazine extension is a straightforward way to add capacity to your M&P 2.0 magazines. If you run a 12, 15, or 17-round factory Smith & Wesson magazine, this billet aluminum extension drops five more rounds into the magazine tube. It's one of those mods that appeals to shooters who want more rounds on tap without swapping to a completely different platform—whether you're working through a high-round count at the range, training hard, or just prefer running hotter. The extension uses the standard OEM magazine spring, so installation is simple and you're not fiddling with specialized internals.

What sets this extension apart is the thoughtful access design. Shield Arms built in easy-open floor plate access, so you can service the spring and follower without having to remove the extension from the magazine body itself. That's a practical detail that saves time during cleaning or troubleshooting. The machined aluminum body includes index cuts on its surface—those horizontal grooves give you better purchase when yanking the mag from a pouch, which matters when you're moving fast or working in less-than-ideal conditions.

Build quality is solid: 6061 billet aluminum machined to spec, then Type 2 hard-anodized in black for durability. It's made in the USA and backed by Shield Arms' lifetime warranty. Just remember to check your state and local magazine capacity laws before purchasing—some jurisdictions have restrictions that may apply.

Key Features

• Adds 5 rounds to S&W M&P 2.0 9mm and .40 S&W magazines
• Compatible with OEM 12, 15, and 17-round M&P 2.0 magazines
• Machined 6061 billet aluminum with Type 2 hard anodize finish
• Easy-access floor plate design for simple spring and follower service
• Index cuts on the body improve grip when drawing from magazine pouches
• Uses standard OEM magazine spring—no proprietary parts required
• Made in the USA
• Lifetime warranty

Specifications

Frequently Asked Questions

What magazines does this extension fit?

The Shield Arms +5 extension works with factory Smith & Wesson M&P 2.0 magazines in 12, 15, and 17-round capacities. It supports both 9mm and .40 S&W calibers.

Will I need special springs or followers to install it?

No. The extension uses the standard OEM magazine spring that comes with your M&P 2.0 magazine, so there are no proprietary parts to buy separately.

Can I easily clean the magazine with this extension attached?

Yes. The floor plate design lets you access the spring and follower without removing the extension from the magazine body, making field maintenance and cleaning straightforward.

Are there any legal restrictions I should know about?

Some states and localities have magazine capacity limits. You'll need to verify your local laws before purchasing, as restrictions vary by jurisdiction.