if you need sights at the range and the purpose this gun is made for, you've got bigger problems to deal with.
Are you saying the pistol is not capable of being used beyond 7 yards?
Are you saying that because there are better platforms for longer distance shooting, that these small pistols cannot be used for them?
Why limit your options to extreme short range only?
Even at short range, there are times when the target will be small, such as during a hostage situation, or someone firing from behind cover.
Sights just add capability for very little cost in size and weight.
True, very few have the skill required to use the capability, but they are out there.
There are also a tiny number that have become so familiar that they can use the silhouette of the pistol as a sight.
Not all shots will be at center of mass from 10 feet.
There are people who are very capable of using smaller handguns far beyond what the are designed for.
I had a German PPKS that was very capable of 2.5 inch groups at 50 yards I shot that size groups at that range many times with it.
Fixed barreled handguns are normally very accurate.