Meprolight Springfield Tru-Dot Night Sight for XD .45 ACP. Fixed set (4" & 5" barrels) Contains both front and rear sights Unequaled low light performance Brightest night sights available Used by military & law enforcement All Tru-Dot sights are covered by a 12 year usable illumination warranty to original purchaser Get the Meprolight Advantage Unequaled Low Light Performance Brightest Night Sights Available Today Used by Military and Law Enforcement