Over 300,000 customers - we say thank you!

40,000+ products for hunting and shooting sports

STERN DEFENSE
AR-15 M&P 45ACP CONVERSION ADAPTER

850001176040 100039215
A .45 ACP Magazine Adapter for Any Mil-Spec AR-15 Lower Receiver
Many of today's pistol-caliber carbine fans are taking advantage of 9mm, but there's a subset of PCC fans that want a harder-hitting pistol caliber for their carbine. Enter the .45 ACP AR-15 M&P Conversion Adapter from Stern Defense. Designed for use with M&P pistol magazines that accept .45 ACP rounds, the Stern Defense AR-15 Conversion Adapter works with any mil-spec AR-15 lower. Installation takes mere seconds, and the adapter even has a last-round bolt hold-open feature! Each Stern Defense Mag-AD Conversion Adapter is machined from 6061-T6 aluminum and features a 4140 NiB-coated feedramp. The adapter features an ergonomic, easy-to-use magazine release and is compatible with all generations of Smith & Wesson M&P pistol magazines, so long as they accept the .45 ACP cartridge.
274.9 274.9 1 GBP
Product no.: 100039215
STERN DEFENSE AR-15 CONVERSION ADAPTER FOR S&W .45ACP MAGAZINES
Mfr Part: 001SDMAGADMP45A 850001176040 Many of today's pistol-caliber carbine fans are taking advantage of 9mm, but there's a subset of PCC fans that want a harder-hitting pistol caliber for their carbine. Enter the .45 ACP AR-15 M&P Conversion Adapter from Stern Defense. Designed for use with M&P pistol magazines that accept .45 ACP rounds, the Stern Defense AR-15 Conversion Adapter works with any mil-spec AR-15 lower. Installation takes mere seconds, and the adapter even has a last-round bolt hold-open feature! Each Stern Defense Mag-AD Conversion Adapter is machined from 6061-T6 aluminum and features a 4140 NiB-coated feedramp. The adapter features an ergonomic, easy-to-use magazine release and is compatible with all generations of Smith & Wesson M&P pistol magazines, so long as they accept the .45 ACP cartridge.
274.9 GBP 0 £274.90 *
Backordered, delivery time approx. 4-12 weeks from the USA warehouse.
Specs: Make: AR-15

Top takeaways

  1. The Stern Defense AR-15 M&P Conversion Adapter allows AR-15 owners to use .45 ACP rounds with M&P pistol magazines.
  2. Installation is quick and easy on any mil-spec AR-15 lower, and the adapter includes a last-round bolt hold-open feature.
  3. The adapter is precision machined from 6061-T6 aluminum with a 4140 NiB-coated feedramp, ensuring durability and reliability.

Attributes

Make: AR-15 Delivery weight: 0.272kg Shipping height: 89mm Shipping width: 114mm Shipping length: 178mm UPC : 850001176040

Item details

Made in USA
US export classification: 0A501.x




Transform your AR-15 with the STERN DEFENSE .45 ACP Conversion Adapter! ⚙️ Quick install, durable design, and compatible with M&P magazines.

A .45 ACP Magazine Adapter for Any Mil-Spec AR-15 Lower Receiver
Many of today's pistol-caliber carbine fans are taking advantage of 9mm, but there's a subset of PCC fans that want a harder-hitting pistol caliber for their carbine. Enter the .45 ACP AR-15 M&P Conversion Adapter from Stern Defense. Designed for use with M&P pistol magazines that accept .45 ACP rounds, the Stern Defense AR-15 Conversion Adapter works with any mil-spec AR-15 lower. Installation takes mere seconds, and the adapter even has a last-round bolt hold-open feature! Each Stern Defense Mag-AD Conversion Adapter is machined from 6061-T6 aluminum and features a 4140 NiB-coated feedramp. The adapter features an ergonomic, easy-to-use magazine release and is compatible with all generations of Smith & Wesson M&P pistol magazines, so long as they accept the .45 ACP cartridge.
Back to top