Meprolight ML19810-Armscor USA/Rock Island Gun Scopes 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 All Tru-Dot sights are covered by a 12 years usable illumination warranty to original purchaser Unequaled Low Light Performance Brightest Night Sights Available Today Used by Military & Law Enforcement