Have owned 5 or 6 with no complaints. Only the SL (silhouette model) have clicks and these figure to about1/3 moa each depending on 6,8, or 10 power. Others with standard turrets are friction. Glass is ok and I think parts are still available through Parsons Precision I think the name is. Somewhat outdated by todays standards and I like the T model Weavers better. Hope this helps.