The Smith & Wesson M&P 4.5” (Military and Police) is a polymer-framed, short- recoil operated, locked-breech semi- automatic pistol using a Browning-type locking system. It was made for, and is used by, law enforcement agencies around the world.

Ergonomics were a key focus in the design so three interchangeable palm swell grips are typically included with the gun: We recommend the larger grip when shooting the Mighty .460 Rowland®.The trigger guard is designed to accommodate gloves and the frame has a magazine release button that can be changed from the left to the right side. It also features an ambidextrous slide stop. It is an impressive gun and well-designed.Our Conversion for the “Full-Size” M&P with a 4.5″ barrel includes:

  • A match-grade stainless steel barrel chambered in .460 Rowland® and rated for the high pressures of our powerful round
  • A set-screw secured Compensator
  • An appropriately sized flat-wound recoil spring assembly


The “Pin and Weld” Option :
The purpose of the Pin and Weld option is to permanently secure the Compensator to the barrel to make it legal in California and other restrictive states.

With the exception of the 1911, the customer must send their slide to 460 Rowland® for pinning.

For the 1911, the barrel is removable/replaceable even after the Compensator is attached, so only the barrel need be sent. In the case of a new Conversion sale, we can pin the Compensator before shipping your order.







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