Owner’s Manual 2020

3. Thread the suppressor or muzzle

device on to the barrel and

tighten it following the

manufacturers

recommendations. Check to

ensure that the bore of the

suppressor aligns with the bore

of the barrel and nothing blocks

the path of the bullet

(Figure 74).

The pistol can now be fired with the

suppressor or muzzle device installed. If a suppressor is attached to the

barrel without a Nielsen device, the pistol can be safely fired but will not

cycle properly.

NOTICE: FN is not responsible for damage to a suppressor or muzzle device

when used on the FN 509 or for damage caused to the pistol due to the

installation of a suppressor or muzzle device.

ALWAYS ENSURE THAT A SUPPRESSOR IS THREADED ON

TIGHTLY WHEN THE PISTOL IS FIRED TO AVOID DAMAGE TO

THE SUPPRESSOR OR PISTOL.

11.7 REMOVING THE MAGAZINE RELEASE

NOTE: The magazine release should not be removed for normal cleaning and

maintenance.

NOTE: The frame assembly does not need to be disassembled to remove the

magazine release.

1. Press up on the magazine catch spring through the magazine well

using a punch or similar tool on the leg of the spring that protrudes

toward the magazine well. Pushing the leg of the spring in toward the

frame and under the body of the magazine release.

FIGURE 74