Product Description
The Stern Defense Mag-AD9 magazine adapter converts a standard mil-spec AR-15, M4, or M16 lower assembly to run 9mm and .40 S&W magazines, including compatible M&P and Sig P320/P250 magazines. Designed to install in seconds, the Mag-AD series features a last round hold open function for improved handling and convenience. Built from aircraft-grade aluminum with a durable black finish, it’s a practical upgrade for range use, training, and duty-oriented setups.
Product Highlights
- Converts mil-spec AR-15 / M4 / M16 lower to accept 9mm and .40 S&W magazines
- Compatible with M&P and Sig P320/P250 magazines for broad magazine options
- Last round hold open feature for enhanced functionality
- Installs in seconds for fast setup and easy removal
- Aircraft-grade aluminum construction with black finish for strength and durability
Specs
- Brand: Stern Defense
- Model/Series: Mag-AD9
- Caliber Compatibility: 9mm, .40 S&W
- Magazine Compatibility: M&P; Sig P320/P250
- Platform Compatibility: Standard mil-spec AR-15 / M4 / M16 lower assembly (5.56mm lower)
- Material: Aircraft-grade aluminum
- Color/Finish: Black
- Weight: 0.6000 lb
- Dimensions (L x W x H): 6.7000 x 4.4000 x 3.4000 in
- UPC: 850001176217
- Manufacturer Part Number: 001SDMAGADMP9AND40/P32
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