Perhaps the correct "early" foresight protector is the waist-ed style, with LB and C broad arrow?
The LB stamped front sight showing inch measurement, a CCM nose cap under a LB marked and acceptance stamped hinged band. All and many more on an unissued 1941 rifle with unmodified bolt head release mechanism.
Please excuse me while I drool...and get a bucket and napkins...
Does that rifle belong to you, AX201201? If so, then more photos, please.