One of
the other interesting features of the P99 is that the barrel system
has been changed to resemble the Browning tilting-barrel system,
something Walther used on the P88. It actually has some similarities
to the Smith and Wesson Sigma autos and the Glock. These shared
components include steel inserts that reinforce the rails on the
polymer frame, a frame-mounted barrel catch for simplified field
disassembly and a hinged trigger safety. There is also an internal
striker lock that is disengaged only when the trigger is fully
cycled.
The
firing system is made up three separate modes and the double-action
conversion mode. The first firing system which is "single-action
mode (trigger forward)" occurs when the P99's slide is cycled
to chamber a round. The hinged trigger must be engaged to unlock
it. By applying about one pound of pressure, the trigger will
move back about 3/8 inch to the next stage, which requires about
5 1/2 pounds to release the striker and fire the pistol.
The second
mode occurs after the first shot has been fired. The trigger remains
locked back in what Walther terms the "single-action mode
(trigger rearward)."
The third
method of firing the pistol is to depress the decocking button
after cycling the slide or whenever it is in the single-action/trigger-rearward
mode. This puts the piston in a conventional double-action mode
with a long heavy trigger pull for the first shot. Thereafter
all subsequent shots are fired in the single-action mode (trigger
rearward).
The magazine
catch can be operated on both side of the rear of the trigger
guard. By depressing either lever the magazine will be released.
Because
the P99 is made of polymer, the pistol is very light and compact.
Unloaded, it weighs approximately 24.5 ounces and has a four-inch
barrel which makes the overall length of 71/16 inches. The P99's
height is 51/2 inches and is just 11/4 inches wide.
The finish
is matte black, and all metal surfaces have a hard wear and corrosion-resistant
Tenifer surface.