Stern Def. Magazine Adapter - Ad9 Ar-15 To Glock 9/40 Mags

The Stern Defense Magazine Adapter – AD9 AR-15 to Glock 9/40 Mags is a versatile solution for firearm enthusiasts looking to standardize magazine use across different platforms. This adapter allows users to utilize Glock double-stack 9mm and .40 S&W magazines in AR-15 pattern rifles, simplifying logistics and reducing the need for multiple magazine types.

Designed as a mechanical interface, the AD9 adapter ensures reliable feeding of ammunition into AR-15 lower receivers and compatible upper assemblies. It allows for consistent round presentation to the bolt carrier group without requiring modifications to the magazine or the rifle platform. Constructed to Stern Defense specifications, the adapter is built for durability in demanding field conditions.

This cross-platform solution is particularly beneficial for law enforcement tactical units, military personnel, and civilian shooters with mixed arsenals. The compact form factor—measuring 4.4 x 3.4 x 6.8 inches and weighing just 0.6 lbs—adds minimal weight or bulk to your fighting rifle while preserving the ergonomic profile that operators depend on.