BSA Optics Edge Pistol Scope 2X20mm 30/30 Duplex Reticle 50 yds Parallax Matte Black PS2X20. Parallax set for 50yards and the click value is 1 MOA. BSA Pistol Scope 2 x 20mm come in black mate (model PS2X20) or in silver mate finish (model PS2X20SIL)....