The Low Profile Manual Safeties are custom-made from the original Beretta part. They follow the profile of the slide perfectly and feature a textured surface on top (left side) for a more secure grip.
 
Benefits of the low profile design:
More comfortable for concealed carry with inside-the-waistband holsters.
Prevents accidental activation of the safety during the chambering process.
High two-hand grip that avoids interference with the safety during the weapon's firing cycle.
Easy activation of the decocker safety, thanks to the textured surface.
Quick resolution in case of a serious malfunction.