Standard length rear, 5/8" (15.8mm) forend wood screw. Mfg: Uncle Mikes SPECS: 1X"X QD & 1" QD fits Anschutz 54, 54MS, 54.18MS, 64, 64MS, 141, 164, 184, 520, 525 Sporter, Kadett, Exemplar Pistol, 1365, 1388, 1416, 1418, 1432, 1450, 1518, 1808ED Super;...