Ruger SR1911 Rear Sights
This family of rear sights are designed to replace the factory installed adjustable rear sights
Extreme Service Rear Sights for the Ruger SR1911 Pistol
From $89.95
For the Ruger SR1911 Pistol with Factory Adjustable Rear Sight
111-R Fit and install Harrison Design rear sight
$55.00
Labor to replace your existing rear sight, no machine work. Insured return shipping back to you is $25.50 additional