Elric
Well-Known Member
http://jackweigand.com/swhpmnt.html
Finally quit ditzing about, unshipped the original S&W N frame rear sight, and installed the no drill three screw Picatinny scope base. It slides in the top slot and has a recoil lug that directly mates with the slot for the Rear Sight Elevation Stud. All three screws (included) started normally and bottomed out with the tip of each screw BARELY inside the top strap. In a word, perfect.
Unship the grips and place grip portion of the frame in wood jawed vice (or other non-marring vice jaws).
Open cylinder, this lets you visually check screw depth of the three mount screws.
Unscrew Rear Sight Elevation Nut. (it is retained, it will stay in place)
NOTE: Unscrew Rear Sight Elevation Nut first, that takes all the pressure off the Rear Sight Leaf screw. The Rear Sight Elevation Nut has a spring loaded Rear Sight Plunger that prevents it from falling out.
Unscrew Rear Sight Leaf screw
Lift Rear Sight Leaf up and remove.
Slide Rear Sight Elevation Nut rearward and remove.
NOTE: The Rear Sight Elevation Stud is pretty small, and after you unscrew the Rear Sight Elevation Nut, you will find this SMALL little square sitting on top of the slot right under the Sight Leaf. Now >IF< you followed my suggestion to put the revolver in a vise, this small Stud will be sitting quite neatly on the slot. If you are holding the revolver in your hands, this small square may slip out and fall on the floor...
NOTE: Suggest you use a small zip-lock to hold complete rear sight leaf screw and parts.
Slide Weigland sight into slot. All three holes should line up spot-on. If they don't, stop and check how you slid the sight in. If it still doesn't make sense, call Weigland!
Install all three screws partway, then tighten them down at the same time (think of tire rims!)
NOTE: You may choose low strength loctite, but IMHO, the design has that built in recoil lug. I didn't use Loctite, might be bemoaning that fact, but the 6-48 (not 8x32 as first thought) socket screws are steel.
Replace grips.
NOTE: Weigland says "Screws are supplied and are 6-48 thread."
NOTE: Earlier S&W revolvers may need drilling. Please consult the following videos:
Installation video:
How to ID S&W Factory D&T Revovlvers:
How to D&T Your Revolver:
Finally quit ditzing about, unshipped the original S&W N frame rear sight, and installed the no drill three screw Picatinny scope base. It slides in the top slot and has a recoil lug that directly mates with the slot for the Rear Sight Elevation Stud. All three screws (included) started normally and bottomed out with the tip of each screw BARELY inside the top strap. In a word, perfect.
Unship the grips and place grip portion of the frame in wood jawed vice (or other non-marring vice jaws).
Open cylinder, this lets you visually check screw depth of the three mount screws.
Unscrew Rear Sight Elevation Nut. (it is retained, it will stay in place)
NOTE: Unscrew Rear Sight Elevation Nut first, that takes all the pressure off the Rear Sight Leaf screw. The Rear Sight Elevation Nut has a spring loaded Rear Sight Plunger that prevents it from falling out.
Unscrew Rear Sight Leaf screw
Lift Rear Sight Leaf up and remove.
Slide Rear Sight Elevation Nut rearward and remove.
NOTE: The Rear Sight Elevation Stud is pretty small, and after you unscrew the Rear Sight Elevation Nut, you will find this SMALL little square sitting on top of the slot right under the Sight Leaf. Now >IF< you followed my suggestion to put the revolver in a vise, this small Stud will be sitting quite neatly on the slot. If you are holding the revolver in your hands, this small square may slip out and fall on the floor...
NOTE: Suggest you use a small zip-lock to hold complete rear sight leaf screw and parts.
Slide Weigland sight into slot. All three holes should line up spot-on. If they don't, stop and check how you slid the sight in. If it still doesn't make sense, call Weigland!
Install all three screws partway, then tighten them down at the same time (think of tire rims!)
NOTE: You may choose low strength loctite, but IMHO, the design has that built in recoil lug. I didn't use Loctite, might be bemoaning that fact, but the 6-48 (not 8x32 as first thought) socket screws are steel.
Replace grips.
NOTE: Weigland says "Screws are supplied and are 6-48 thread."
NOTE: Earlier S&W revolvers may need drilling. Please consult the following videos:
Installation video:
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