made extra long at both ends, sp the aperture may be driven right or left as required, then the ends filed off even and the sight blued. Thc aperture was made by drilling in just the point of a 3/8 inch drill in the stock, which was afterward shaped up by filing. To attach, a hole is drilled in top of bolt sleeve, and tapped out for an 8/48 screw, the head of which is countersunk in the sight. The screw should be set in hot to assure a tight fit.
The drawing 175B shows a better sight made by Mr. John C. Harris, and described in thc American Rifleman of May 15th, 1925. This sight has both elevation and windage; elevation being provided by the small tension screw set about thc middle of the base, which is dressed thin at this point, and spring tempered. Windage is provided in thc usual way with a transverse screw operating in a stud under the aperture dovetail, the screw being held at both ends against the base of sight. This sight would possibly be improved by having the aperture tapped for a small Lyman or Watson disk.
tfig. 175 A
Cocking piece sights made for the Haenel-Mannlicher 9 mm., the Newton, Mannlicher-Schoennauer, and Mauser rifles are provided with a special nut for attaching to the cocking piece, and this nut has the sight base dovetail cut in it It is necessary to drill and tap thc cocking piece for the nut, for which purpose Lyman provides a special tap and drill, with full instructions.
When all is said and done, the best way to fit a cocking piece sight, is to send the cocking piece to Lyman and let them do it for you. There is but one better way—use some other kind of sight.
BOLT SLEEVE SIGHTS. There are several recent developments in bolt sleeve rear sights, and this type bids fair to become increasingly popular. One of the best designed, and poorest made is the Howe-Whclen, shown in Figure 103. (Chapter 14.) The elevation slide and windage arm are almost identical with the Lyman
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