FAB Defense VFR-VZ - Manual (Page 3)

Step 2. Lift the Upper Handguard as shown in Fig. 3 and remove it from the Receiver.
Step 3: Pull the Lower Handguard down and remove it from the Receiver (Fig.4).
If necessary, use a Hammer.
Step 4. Using the Allen Key (4) release the four Connecting Bolts (7) (Fig.5) and
separate the Upper Handguard from the Lower Handguard.