.22/airgun mount base to Weaver/Picatinny tactical rail adaptor Made from aircraft-grade aluminum alloy with matte black finish Top rail with 9 slots and middle V-cut Complete with one vertical stop pin Specifications: Material: Aluminum Weight: 2.3 ounces Pieces: 1 Rail Type: Picatinny/Weaver No. of Rails: 1 Length: 3.9 inches