Hi Michael and welcome. Yes, you can or a local gunsmith can no issue. Dawson Precision is my go-to for 1911 and other Sights: https://dawsonprecision.com/sight-for-springfield-armory-1911-mil-spec-pistols-fixed-carry-fiber-optic-rear-by-dawson-precision/ --------- Cheers, stay safe and enjoy! ------------- Sight tool available here: budsgunshop.com/product_info.php/products_id/132558/ncstar+vism+universal+pistol+front+%26+rear+sight+tool+steel+blue

Yes you can, providing you find sights compatible for the GI model 1911 that you like.

the rear is easy to change however there are not may options to fit the GI dovetail here is one for the rear 10-8performance.com/1911-nm-rear-sight/ or you could have the slide machined to take novak style sights both front and rear the front sight is a staked sight and not something for most armatures to attempt a great sourse for 1911 sights and sight mods is Dawson Precision https://dawsonprecision.com/gun-sights/