HD-007 Extreme Service Rear Sight family for current production Colt Gold Cup and Special Combat Government Model pistols.
Extreme Service Rear Sight, plain black
Night Sight -w- single lamp for "Over/Under" pattern
Night Sight -w- 2 lamps for 3 dot pattern
Loctite 262 thread locking coumpound
AKA - The truth about sight heights!
Labor to replace your existing rear sight, no machine work. Insured return shipping back to you is $25.50 additional
Advise for what to expect when replacing dovetail mounted sights on your 1911