My BG380 has adjustable sites for windage. Elevaton is adjusted by how you line up the verticle plane between the front and back site. I put a small dot of white paint on my front site so it's more easily seen against a dark bakground. Try white chalk first to see if it helps.
Smith & Wesson Semi-Auto Pistols Thread, Aftermarket nite sights for BG 380 out yet? in Smith & Wesson Semi-Automatic Pistols; Does anyone know if there are any nite sights or adjustable sights for the BG 380 yet?...