Odd how many LB mags are salted away until the need arises. By all means, replace the magazine, and keep the SMLE mag.; you'll need it for a rifle, or trade, sooner or later. The wood is likely birch. LB primarily used walnut and yellow birch, experimented with maple. The Brits used a lot of beech. Beech has charcteristic "eyes" in the grain. Nice, unmessed with rifle.