I don't think the Lyman was mounted on the A4 (until perhaps post-war). Lyman and Weaver both relied on the Bausch & Lomb to grind lens and B&L was overworked with making lens for binoculars, periscopes, gunsights. Rifle scope lens had a low priority and Remington got backlogged on rifles they couldn't finish because of the lack of scopes. BTW, Lyman provided 100 Alaskans to Canadaicon where they were mounted on the No. 4 (T). The scopes were used in a clone of the G&H mount that was licensed to Canada.