No.4 Stock fore ends and lower

I have a spare stock for my 4's and was doing the BLO on it and thought I would have a look for markings and it yielded this CCM stamped on top and bottom metals of the stock, under the front of the bottom fore end LB 66 which I gather is Longbranch 66(Year?), 4L7472 (What year was this rifle?) C & crows foot (I gather Canadian issue), just in front of the screw front trigger guard is a Z, under rear left hand side near the mag well cut out is a J, on the back tie strap there is a circle with a B in it. I appreciate as always and information supplied by members.:thup:

4L is a 1942 dated rifle.

CCM is Canadian Cycle and Motor Co. Thousands of these steel end caps were used on UK made fore-ends and handguards

LB/66 is an inspectors mark not a production year. Others seen LB/32, LB/34, LB/52 etc. Ron(Canada)