Stern Defense Conversion Block - M&P and P320/P250 9mm and .40 S&W Magazines

The Stern Defense Magazine Conversion Block allows you to use 9mm or .40 S&W P320/P250 and M&P magazines in your favorite standard AR-15 lower receiver. This magazine adapter installs in seconds and features last round bolt hold open functionality – a welcome improvement when compared to other PCC builds. The Stern Defense MAG-ADMP9&40 adapter is constructed from 6061-T6 aluminum with a 4140 steel NiB coated feed ramp and are designed to be used with a Glock cut bolt. If you are looking to convert a standard AR to use 9mm or .40 caliber, this mag well adapter is a perfect start.

Features:

• Designed for use with 9mm or .40 caliber barrels and Glock cut bolts
• Constructed from 6061-T6 aluminum with type 3 hardcoat anodized finish
• 4140 steel NiB coated feed ramp
• Ergonomic magazine release
• Last round bolt hold open
• Works with all generations M&P, Sig P320, and P250 magazines
• Works with any Mil-Spec lower receiver
• Made in the U.S.A.

With pistol caliber AR-15s on the rise in popularity, Stern Defense is leading the way with innovative components to convert your standard AR lower to be compatible with pistol magazines from Glock, S&W, and even Beretta in a variety of calibers. Stern Defense is located in Missouri and dedicated to helping you build the ultimate pistol caliber carbine.