The Meprolight Tru-Dot Green Tritium Fixed Night Sight Set is a direct drop-in replacement for the factory sights on Bersa Thunder BPCC and BP9CC pistols, delivering self-illuminating Swiss tritium front and rear sights with white contrast rings for fast, instinctive 3-dot target acquisition in any lighting condition with absolutely no batteries or switches required. Day and night, the shooter's aiming reference is three consistent white-outlined green dots that are identical in appearance and position under all lighting conditions, eliminating any transition between day and night use and delivering an over 85% increase in hit efficiency versus factory sights. Drop-proof, shockproof, maintenance-free, and backed by Meprolight's 12-year tritium illumination guarantee, these sights install directly into the factory dovetail with no slide modifications and are always ready right out of the box.