The current BMW M5's time is running out as development continues on the new 2018 model, but that isn't stopping the German automaker from churning out a few special editions. The latest is the 2016 BMW M5 Pure Metal Silver Limited Edition model.

Limited to only 50 units and only available for the U.S. market, the Pure Metal Silver Limited Edition M5 will likely be the only one at your local Cars & Coffee gathering, should you be one of the few to acquire one.

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As with any M car, power is more than ample with 600 horsepower and 516 pound-feet of torque sent to the rear wheels through a dual-clutch transmission. That's 40 more horses and 16 pound-feet more torque than the standard M5's output from the 4.4-liter twin-turbo V-8.

BMW says the extra power comes from increased boost pressure, as well as some other unlisted modifications.

BMW claims a 0-60 mph sprint of just 3.9 seconds for the uprated M5.

The Competition Package comes standard on this limited edition, but now also includes 20-inch alloy wheels.

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As you might expect from its name, the Silver edition is painted in a color called Pure Metal Silver. The interior is wrapped in leather with contrasting stitching and aluminum trim. The Pure Metal Silver M5 badge is affixed gently inside, just so passengers will know this is a limited edition model.

If the Silver edition seems familiar, it should. It has the same output and many of the same tweaks--aside from paint color--as the 30 Jahre M5, also known as the 30th Anniversary Edition M5.

Order books open in August. The 2016 BMW M5 Pure Metal Silver Limited Edition starts from $131,895.