Addendum 2017

FN M249S® Safety Addendum
3
12. MANUAL BOLT LOCK DEVICE
The FN M249S® is a closed-bolt rifle that does not feature an integral bolt lock
or bolt stop. In order to “lock” or hold the bolt to the rear-open
position, a manual bolt lock device is included. The manual bolt lock device
is a yellow plastic block that was shipped inserted into the magazine well of
the rifle. Do not discard the manual bolt lock device.
To use the manual bolt lock device to hold/lock the bolt in the open position:
1. Make sure the slide hammer is cocked and the safety selector is in the SAFE position as explained in
Sections 10 and 11 and the muzzle is pointed in a safe direction.
2. Clear the rifle as explained in Section 17 and ensure that no ammunition is present in the rifle.
FIGURE 7.A
3. Open the feed tray cover by squeezing in on
the cover latches on the rear of the feed tray
cover. See Figure 7.A. Leave the feed tray cover
open in the 45⁰ or 90⁰ position.
WARNING! PULLING THE CHARGING HANDLE TOO FAR TO THE REAR WITH THE SAFETY IN THE SAFE
POSITION MAY CAUSE THE SLIDE HAMMER TO LODGE AGAINST THE SEAR AND LOCK THE SAFETY
BUTTON. DO NOT PULL THE CHARGING HANDLE TO THE REAR SO THAT THE REAR OF THE BOLT
CARRIER MOVES PAST THE REAR OF THE EJECTOR. REFER TO FIGURES 7.B AND 7.C.