Peep Rear Sight, adjustable,
to fit Thompson Center, Lyman Deerstalker,
Lyman Trade Rifle, and similar Hawken rifles
Part Number: RS-57-SML
Availability: Out of Stock, request notification when available.
Price: $119.99
  
This blued sight, with two eye disks, is easily installed on Thompson Center, Lyman Deerstalker, Lyman Trade Rifle, and similar Hawken rifles. Two mounting screws included. Features 1/4 minute micrometer click adjustments for elevation and windage, quick release slide. Small 5/8" diameter knurled disk is drilled .040". Large 1/2" diameter knurled disk is drilled with a .092" aperture for large field of view and quick target acquisition. A third choice is to use this sight with no eye disk installed, for quick sighting in dark woods or dark days. Both large and small eye disks are included (small disk shown). Made in the U.S.A. by Lyman, this sight is a favorite of target shooters. It may require drilling and tapping an 8-32 hole. Use our tap drill #DRILL-29 and #TAP-8-32-T 8-32 taper tap.

Shown with the 1/2" aperture installed. Replacement apertures are available at extra cost.
Re-order large 5/8" disk with smaller .040" aperture, #RS-57-DISK-2S
Re-order small 1/2" disk, with larger .093" aperture, #RS-57-DISK-2L
Disks have special 7/32-40 thread to fit Lyman and some other sights.

The RS-57-SML sight shown installed on a Thompson Center Hawken rifle. Rifle not included.
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lyman-57&66-sight-instructions.pdf Last updated:6/17/2015 (68 KB) page_245.pdf Last updated:4/25/2012 (145 KB)
drill bit, HSS, Number 29, .1360" diameter, tap drill for 8-32 thread
drill bit, HSS, Number 29, .1360" diameter, tap drill for 8-32 thread
Part Number: DRILL-29
Availability: In Stock
Price: $2.19
Order Quantity:
Aperture disk, large, 1/2" diameter, .093" aperture, fits Lyman RS-57-SML or RS-57-GPR sight
Aperture disk, large, 1/2" diameter, .093" aperture, fits Lyman RS-57-SML or RS-57-GPR sight
Part Number: RS-57-DISK-2L
Availability: In Stock
Price: $9.99
Order Quantity:
Aperture disk. Small .040" aperature in large 5/8" disk fits RS57SML or RS57GPR. Special 7/32-40 thread .
Aperture disk. Small .040" aperature in large 5/8" disk fits RS57SML or RS57GPR. Special 7/32-40 thread .
Part Number: RS-57-DISK-2S
Availability: In Stock
Price: $9.99
Order Quantity:
Tap, high carbon steel, 8-32 thread, taper tap
Tap, high carbon steel, 8-32 thread, taper tap
Part Number: TAP-8-32-T
Availability: In Stock
Price: $3.99
Order Quantity:
 
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