Looking for a factory set is iron sights for ruger 44mag carbine serial number 100-43585
Numrich has the front sight for less than $7 before shipping --->
https://www.gunpartscorp.com/products/224380AeBay has a rear sight that might fit ---> https://www.ebay.com/itm/222064816211?epid=1621673772&hash=item33b4183053:g:ONkAAOSw6OpgjWg1