Ameriglo brings a clear advantage to your shooting experience on and off the range.The hackathorn sight is ideal for any conceal carry and personal defense weapon.It utilizes a proglo green tritium front with an orange outline and a glare-reducing black serrated rear sight.This model is compatible with glock 20/21/29/30/31/32/36/41 gen1-4.Rear Color: BlackType: Front/Rear SetFrame Material: SteelFrame Color: BlackFirearm Fit: Glock 20/21/29/30/31/32/36/40/41Style: SetFront Material: TritiumRear Material: SteelFront Color: Green w/Orange OutlineFirearm Type: Pistol