The Glock 24 was Glock's long slide competition gun in .40, now out of production. Its frame matches the full size Glocks, so Toni System's frame mount and base pads that list the 24 fit it.
Frame mount
A long slide .40 already has good balance, and a frame mount adds more weight under the barrel to hold the muzzle flat during fast strings. The aluminium version adds moderate weight, the brass version much more. On top of that, it gives a thumb rest something to bolt to. See Frame mounts for Glock 24.
Base pads
Aluminium pads from flush to nine extra spaces give the magazines a larger, heavier base that seats firmly and drops free. In .40 the number of extra rounds is lower than in 9 mm; check the product page. They are in Base pads for Glock 24.
Sights and dot
Sights and red dot parts for the 24 are not listed separately; many Glock 22 and 35 parts share its dimensions, so check those pages and each product's model list.
Frequently asked questions
Is the Glock 24 still made?
No, but parts that fit the full size frame still fit it.
How many rounds does a +5 pad add in .40?
Fewer than in 9 mm; the product page states the details.