Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Will these fit a Para GI Expert 1911?
Document: This sight does not fit the Rock Island Tactical M1911s made over a year ago. It may fit the new Rock Island Tacticals. The product description should provide a list of which 1911s this will fit and which it won't.UPDATE: Amazon did the gracious thing and let me return the sight since it did not fit.
Bought the CA128Y Novak sight set.Though the picture shows a set screw for the rear sight there is not one supplied according to Eric at Trijicon Customer dis-service.I sort of blew it off when I got the sights, thinking that the Novak set screw would fit.
I had these on a Glock and got them for my 1911.First, they are raised a bit so if you are trying to get them to see over a suppressor...they will do the job. They are as high as any other set of sights you'll find on a Sig Elite Dark series which are raised for the purpose.
Love these sights and was pleased to find that amazon had them for the 1911. I run them on all my carry pieces. Orange sight is easy to pick up and track. Rear sight is good U notch and steep ledge incase racking the slide off the sight is ever necessary. Built strong and trijicon tritium lamps are nice and bright at night.
It makes the sights acquire decidedly faster and more accurately especially for distance shooting.Thirdly, They are good metal sights and solid. You will have to cut these into the slide of your 1911 and that will be a costly process if you don't know how to mill a slide but once you have them on...you can charge the pistol by simply snagging the rear sight on something. It's as solid as a damn stone with the depth of the cut needed to stabilize the rear sight.
I bought the sights for my Springfield 1911, just had them installed, gunsmith ruined them by hammering on the front blade dove tail but they still work. Very quick acquisition of orange dot, rear sight is cut for even more visibility of the front blade. Very happy with sights, very upset with gunsmith, if I could do it again I would send them to the recommended gunsmith from Trijicon.Live and Learn!
These sights installed are certainly a 5 star product. The different color front sight allows for super quick acquisition of ur target without mis-aligning the sights, which is easier than u would think in the dark. HOWEVER these sights have way to tight of a tolerance, and will mar up ur slide. I like my 1911 pristine, and will not tolerate an imperfect finish. I use a sight press designed for the 1911 and it was almost impossible to install flawlessly.
Visually bright and strong...no plastic crap here. The sight picture is easy to attain with the color outline on the front sight post. Great for home defense or playing at the range.
It's worth it to pay the $50 for a gunsmith to install. Then u can question him about the gouged slide and hold him responsible. Great product in theory, but there is a failure within the execution.
I got exactly what I ordered faster than I expected. My gun is on a whole different level. Great Experience.
Answer: yes