This aftermarket Galil ACE Picatinny Stock Adapter part easily adapts your Galil ACE rifle, pistol, or SBR for use with picatinny-mounted stocks such as the Sig MCX folding stock or picatinny-mounted pistol braces. This aftermarket Galil-Picatinny Stock Adapter plate is compatible with all current versions of the Galil ACE rifles and SBR's. Note: All NFA Rules Apply. So whether your firearm is chambered in 5.56, 7x62x39, or.308 Winchester, this Picatinny Stock Adapter plate securely fits most models and is compatible with the Galil ACE and other rifles with the same stock mounting system. This stock adapter offers exceptional strength and durability while maintaining a lightweight profile.