I've owned/used both Lyman & Marble's tang peep sights on Winchesters & Marlins - and either/both are fine, depending upon your pursestrings and druthers.
The Lyman #2 is about 1/2 the cost of the Marbles, with bothe twist adjustable for elevation adjustment (rotate the stem).
The Lyman's windage is adjusted via shimming one side or the other of the tang sight base - set-n-forget, so to speak.
The Marble's windage adjustment is via an adj knob - E-Z-P-Z.
In reality, once zeroed, most rifles NEVER need to be readjusted for windage for either game or target shooting - just for elevation in target shoots - Sooo the less expensive Lyman makes more sense to many.
Also, the sighting stem of the Lyman looks thicker/meatier than the thinner-frailer looking Marbles.(YMMV)
Lyman supplies the needed longer tang screw for your rifle(s), it's an extra order from Marble's.
Lyman supplies a special sub-base for Marlins, so that the tang sight front base hole doesn't need to deface the top tang SN, a Federal offense - Marble's has no such base.
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