This is the Shield Arms Smith & Wesson M&P M2.0 +5 magazine extension.

Quickly upgrade your M&P M2.0’s capacity with this high-quality +5 magazine extension from Shield Arms! 

Machined from 6061 aluminum and featuring a type 2 anodized finish, this extension not only adds capacity but amplifies your magazine’s durability. You’ll also find index cuts on the body that increase your grip and make reloads easier than ever. 

This extension fits factory S&W M2.0 12, 15, and 17-round magazines, so consider grabbing a few and upgrading all of your magazines. On top of it all, each extension is made in the USA and backed by a lifetime warranty. 

These +5 magazine extensions are sure to sell quickly, so order some while you can!