Good light gathering: 50 mm objective gives better brightness in dawn/dusk/shade compared to smaller objectives. Helps with rimfire accuracy when light isn’t great.
Calibrated reticle for subsonic .22 LR: The hold-over / drop points are built for subsonic .22 ammo, so less guesswork if you use that type — you can use the marks without having to manually adjust for every shot.
Illumination red/green with multiple brightness levels: helps in low light or against different backgrounds.
Good adjustment range (80 MOA both axes) gives plenty of room for elevation/windage adjustments.
Sturdy build: with waterproof/fogproof etc., so suitable for field use.
Comfortable eye relief, decent field of view at low power, making it usable for general rimfire practice, small game etc.
Shoot .22 LR subsonic ammo, especially in outdoor settings with varying light, and want to shoot out to moderate distances (say up to ~150-200 yd) using reticle drop marks.
Hunt small game or pests, or do general plinking / practice. The large objective helps when it’s getting dark.
Need illumination in your scope, and want more visible reticle options (red/green) for different backgrounds.