What is STI's front sight blade width? Rachel Zorn September 18, 2017 16:07 Updated Follow The competition width is .100″ while the carry width is .125″. Related articles What sight cuts and heights does STI use? What is the recoil spring weight in my gun? How do I take my STI firearm apart and reassemble? Will STI 2011® magazines hold any ammunition loaded longer than SAAMI spec of a specific caliber? What can I expect the trigger pull weight to be on an STI handgun? Comments 0 comments Please sign in to leave a comment.