Lee Enfield No4 Rifle and No5 Carbine "Singer" Milled Micrometer Sight

A New Old Spares "Singer" / Mk1 milled micrometer rear sight for the Lee Enfield No 4 Rifle and No5 Carbine - with optional fastener kit as a seperate item.
 
"Rifle" sights are calibrated for a longer sight radius and use a unique thread for the elevation screw to achieve 2 MOA increments - scale is marked for the Mk7 British 303 round from 200 to 1300 yards.  
 
"Carbine" sights are calibrated for a shorter sight radius and use a unique thread for the elevations screw to achiece 2 MOA increments - scale is marked for the Mk7 British 303 round from 200 to 800 yards.
 
The screw mechanism does allow a couple of clicks above this max range and a couple of clicks below the min range for you to set a working 100 yard zero (count whole positive clicks down 2 or so should do it).
 
The sights with the milled base take the 4 piece fastner kit.  Sights that are fbricated (bent steel sheet) need a spacer to fill the gap between the receiver horns and so take the 5 piece fastner kit.
 
Ideal to restore or replace the rear sight on your No4 Rifle or No5 Carbine.
 
Many other sight versions, individual parts and accessories avaialbe - please feel to ask for detials / enquiries.