Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Has anyone tried this mount on the Para-Ordance line of 1911's?
Document: This mount does not require any gunsmithing -- ok, so I did have to file a small amount of metal from the mount to achieve a good fit on the gun, but that was very minor.I am very satisfied with this mount and I would recommend it to anyone who might be thinking of putting a mount on their 1911 .45 pistol.
Unfortunately, the new one had the exact same undersized problem too...I would also recommend that you check your own 1911's slide stop cross-pin and see if it is around 0.175" -- which would make you good to go; or if it is around 0.200", and in which case this will not be the scope mount for you (at least, not unless you work with a gunsmith).
The one that arrived with my mount fit my Remington 1911 R1 perfectly, and the slide locks open as it should when the ammo clip empties.One problem I had was that one of the tiny allen set screws used to keep one of the fat wedging screws from backing out was missing. At first, I tried using some locktite to keep the fat screw from backing out, but the strength of the .45 recoil seemed to be too much for the locktite and it quickly lost it's position causing my mounted red dot sight to lose zero.
I installed this UAG Tactical Scope Mount on my 1911-A1 pistol, but the gun would then completely lock-up after a single shot.On disassembling the mount from my 1911 I found that -- for some unknown reason -- UAG had supplied a *radically* undersized cross pin (i.e., the pin that keeps the barrel link, frame, and the slide stop together and pivoting with this scope mount, and replaces your stock slide stop lever). Indeed, the UAG cross pin diameter is 0.175", instead of the Colt 1911 standard of 0.200" (give or take).Why UAG would do this I am completely baffled, as their unit fits like a glove and is one of the best non-gunsmithing mounts I have ever seen for a 1911; but without the proper sized cross pin, no 1911 (that I know of) will operate properly.I spent considerable time making my own properly sized replacement cross pin (see pics), but I have the knowledge to do this safely, while most people do not, and I do not recommend that anyone else attempt this unless a gunsmith gets involved.I also contacted the sellers (Tactical Deals), and they quickly and politely responded and sent out a new cross pin.
I would recommend this scope mount if you want a really clean solid mount and don't want holes in your 1911 but, if you don't have the right tools, materials and experience, take it to somebody who does (i.e. a gunsmith). Safety first! Improperly hardened steel can shatter on impact, mild steel can bend - think about that before you put a live shell in a DIY project.
I purchased this scope mount because I did not want to drill holes in my new RIA 1911 Tact. Reading the prior reviews, I was aware that it might require a bit of machining but was not too concerned about it. I e-mailed the company through the Amazon link about the undersized slide stop pin but, did not receive a response.Out of the box, the channel for the frame was about .030" too narrow to fit the RIA. After machining the mount to fit, I was able to assemble the parts on the gun.
Delivery was fast Product took some time to mount alot of filling to get tight fit on dust cover of the Armscor GI complained to USGtactical they were suprised no other customer complained about this model.The range test was great scope worked great shot 1.5 inch group with 8 shots full mag at 25 yards scope was easy to zero the mount did loosen up a little used just a little lock tight all in all fine product .
A provided allen wrench is used to tighten it to the pistol. Two other fat allen screws are used to hold the mount in position with no movement. One of these acts as a wedge between the mount and the trigger guard and the other as a wedge betwee the mount and the bottom of the barrel. Tiny allen screws are used in conjunction with these fat screws to lock the fat screws in place thus preventing them from backing out of position.I did not have the problem noted by other reviewers with the size of the slide lock pin.
I threaded both ends to fit the threads in the mount and cut them a little long to accept a small locknut on either side. Since the slide stop pin is now just a pin, threaded on both ends and screwed into the mount, I needed a way to remove it. I slotted both ends for a flat head screwdriver, rounded and polished both ends and blued the pin and both locknuts.The gun is now pretty, has a red dot scope on it and is internally right on spec. I am NOW very happy with the mount.
The screw that engages the lug and the sight is undersized, the screw material too weak and the aluminum is too soft. After a few hundred rounds the threads on the screw flattened where it passes through the frame, and the aluminum on the release side became oval instead of round. I was firing 200 Gr swc bullets over 5 grains of W251, so the load is light and the mount still failed. I think the design may be viable, but the construction needs to be beefed up. Also the adjusting screws that contact the frame should have been brass point instead of hard point so the frame would not be marred.
Answer: yes