Winchester 9422's were never factory D/T'd or prepped on either the receiver or the tang for any kind of peep sight.
Williams Gun Sight Co (WGRS-54), New England Custom Gun (NECG-Grooved 22), and Skinner Sights, all make "clip-on" receiver peep sights that utilize the receiver's scope mount grooves, AND require a front sight blade taller thasn issue, in order to zero the rifle - a good chance to switch the front sight bead to another type (Gold, Ivory, Fiber Optic, etc) that may be more to your liking than the 9422's issue style.
This is my 9422 with the NECG sight
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