Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: Will these fit a Springfield 1911 .45?
Document: These didn't fit the Commander I bought them for. Had to go buy another gun so I could use them.
Just what I Needed for my Colt Government Series 80 stainless. Good fit and finish. I prefer these over similar sights. Better accuracy at the indoor range.
Unfortunately they didn't fit my Para Expert Commander, so I had to send them back. They were very bright out of the package. I'm not going to deduct any stars because they are for a Colt and I just guessed they would fit my Para. Great night sights though.
Excellent product. Too bad there is no model available for my Micro Compact 1911. These sights provide a large white dot, surrounding the small Tritium dot in the center, providing excellent sight visibility in daylight conditions.
I bought these sights to go on my Colt Government Model 1911. I have used all kinds of different night sights and I think these are just as good if not better that any of the high end night sights. The rear sight is low profiled so it makes for easier drawing when carrying concealed and it don't get snagged on your clothing. I will be getting some more of these for my other off duty and back up handguns.
After purchasing Meprolight sights and having them installed on to my Colt 1911 Combat Commander series 80 pistol. The overall difference and confidence of aiming and seeing and acquiring my target is so greatly enhanced. The alterations needed to accommodate the front sight was the one thing that took the most amount of time. But after the work was completed..... The end results spoke for themselves. The tritium Tru-Dot Tri-Dots are so bright and simple to align in low lighting conditions.
need gun smith to install. Just could not do it myself (tools). They look great on pistol. Just wished I had ordered adjustable sights.
Thus far I'm extremely satisfied with my sights, however the true test is in the longevity of your product. This is the second pair I'v purchased in 12 years, so as long as I get this type of mileage from your sights I'll continue to be a satisfied customer and, do my part by recommending your product to those looking!
This will not work on the very early Series 80 models as they still had the .076&#34; tenon slots for the front sight post as did the Series 70s. Before procurring this for your Series 80, be certain of the dimensions of the front sight slot; either call Colt and verify your serial number and year of make or remove the front sight and measure the slot with a dial caliper. Hopefully, this will save someone else my irritation and wasted time.
This sights are awesome.. I see clearly with extremely low light. This is the third set of sights that I buy for my guns. It was a great buy...They are easy to install.
Answer: yes