24 Sight Options - Food for thought:

Here is my latest M 24 project. The rear peep is a Lyman 53C. It sits low enough so you can use the original front sight. Here it is sitting lower than its correct position. "Why?", you are sure to ask, "is there a scope-related hammer spur on this 24?". Answer is the thing is hard to cock and my grandson can't manage to cock the narrow hammer without some "help".
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Here's a jerry-rig scope set-up on my Crosman .22 pump-up. Clamps on the bbl. Kinda awkward, but it works well.
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Below are some aftermarket sights avail for the 24. The Redfield Model 24 peep is made specifically for the Sav 24's that have the grooved bbl. Note in the bottom pic the sight is domed in order to clear the shape of the bbl. It also needs a riser that elevates the front sight.
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