FAB Defense Picatinny Rail for Tavor-21 Black. This FAB Defense Picatinny Rail provides a great mounting solution for bipods and foregrips. This FAB Defense Tavor Picatinny Rail may require slight modification while installing. Specifications for FAB Defense UPT TAR-21 Tavor Picatinny Rail: Manufacturer: FAB Defense Color: Black Features of FAB Defense UPT TAR-21 Tavor Picatinny Rail: Compensates Hand Guard's Angle to Allow Parallel to Barrel Positioning Milled From 6061 T6 Aluminum Provides Solid Mounting Solution for Bipods Foregrips and More Package Contents: FAB Defense UPT TAR-21 Tavor Picatinny Rail FAB Defense FX-UPT: FX-UPT TAR-21 Tavor Picatinny Rail Black