Yes, the sights on the stock 15-22 are very, very good. They are arguably the very best sights on any .22 rifle made- unquestionably so for 'tactical' style .22s.

Windage and elevation are adjustable with 1/2 minute clicks (without tools!!). Properly zeroed at 25yds (with HV ammo), they give a very practical battle sight zero out to 100yds. (Your POI is always within 3" or less of your POA, regardless of distance and without elevation adjustment.)

Better yet, you can quickly and reliably then dial your elevation out to 200yds- and then just as quickly and reliably return to your 25yd BSZ. Most scopes won't do this- let alone red dot sights.