TRUGLO TFX Tritium and Fiber-Optic Xtreme Handgun Sights for H&K VP9, VP40, P30, P30SK, P30L, 45, 45 Tactical (Including Compact) UNMATCHED VISIBILITY in all shooting conditions, night or day; GLOWS IN THE DARKno batteries or light exposure required Front sight FOCUS-LOCK RING for even faster focus TFX SEALED CAPSULE DESIGN provides maximum protection and durability; FORTRESS FINISH provides a permanent protective coating; Impervious to oils, chemicals, cleaning solvents, and ultra-sonic cleaning processes CONCEALED FIBER cannot be seen by target; SNAG RESISTANT DESIGN fits standard holsters MACHINED AND ASSEMBLED IN THE USA with quality Swiss Tritium for maximum brightness; 12-YEAR LIMITED WARRANTY; Patented