F.A.B. M4 - FAL FK

M4 Collapsible Buttstock System for FN FAL

The M4-FAL FK is an M4 style collapsible buttstock with 5 optional length positions  for the FN FAL


  • Provides optimal eye to target alignment
  • Made from 6061 T6 Billet aluminum and fiberglass reinforced polymer composite
  • Replaces the original stock and securely attaches to the FAL buffer tube and receiver
  • Integrated Quick Detach sling swivel connectors on both sides
  • Enhances natural fighting stance and hold on your FAL
  • Rubber butt-pad for reduces slipping
  • Intergraded storage compartment for two CR123 / AA batteries
  • Available in black, olive drab green, or desert tan


  • Original FN FAL, and matching metric based variants.

You can buy directly

visit our U.S. website


Weight516 gr
Width45 mm
Height150 mm
Length265 mm
LOP min350 mm
LOP max435 mm


Follow Us