Magnum Research MR40 Eagle Fast Action Series .40 S&W Semi-Auto Pistol, 4" Barrel, Two-Tone Stainless/Black
This Magnum Research MR40 Eagle is a Fast Action series, striker-fired semi-automatic pistol chambered in .40 S&W. It features Walther P99-pattern controls, including a paddle-style magazine release and a top-of-slide decocker-style button, along with a polymer frame and a stainless/satin-finished slide. Markings include "MR40 EAGLE" and "MINNEAPOLIS, MN USA" on the slide, and "FRAME MADE IN GERMANY" on the frame.
Condition
Overall Condition: Fair condition, showing extensive signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Overall Mechanics: This firearm is in solid functional shape.
Cosmetics: There are scratches and blemishes present. Light rust and pitting are present.
Specific Condition Notes: The bore is clean and shiny. The exterior shows scratches and blemishes, with light rust and pitting present.
What's Included
- 1x 11-round steel pistol magazine (unmarked; exact manufacturer/model not visible in photos)
The MR40 Eagle is built around a polymer frame with an integral accessory rail, paired with a stainless/satin slide for a clean two-tone stainless/black look. The grip uses a wavy/ribbed texture with an embossed eagle-style logo for a distinctive factory appearance.
Controls follow the P99-style layout, including a paddle magazine release and a top-of-slide decocker-style button. The pistol is described as striker-fired with no external hammer visible, and it is noted as DA/SA-capable with a decocker listed among its safety features.
This example is chambered in .40 S&W and is marked accordingly on the barrel/chamber hood. It is configured with iron sights, using a one white dot front sight and a two white dots rear sight for a straightforward three-dot sight picture.
With a 4" barrel and 11+1 capacity, it is set up in a practical, service-size format while keeping the MR40 EAGLE markings and Magnum Research eagle graphic prominent on the slide.




