Should the worst iron sights have a negative cost?

All the current iron sights cost 5 points

But not all iron sights are equal

the worst iron sights can look like this  (M123K) (All Screenshots are from Sorrow's videos)

Meanwhile there are much better iron sights that look like this 

I believe that if it is too much work to change the "bad" iron sights into something that is not a miscarriage like M123K, their attachment cost should at least be adressed.

In the case of the M123K and similar irons, I think that not only the iron sight should not cost poits but it should have a zero to NEGATIVE cost (aka if currently an M123K has a 100/100 points with its iron sights + other attachments, the sights should made the cost go 95/100 or 90/100 as a compensation for equiping such a nearly unusuable iron sight.

These sights might make sense in the real world where one bullet could destroy a human, but this is a game where a someone needs to land 4 shots or more to someone  depending on the distance and the body parts, so one is not supposed to just spray the general direction of an  enemy and wait for a random shot to take them out, but to be consistent  at it or the other side's vampire regeneration kicks in.

Conclusion:
Please consider giving people some handicap for picking a horrible iron sight if you do not want to break "authenticity" to provide every gun with reasonable iron sights... why do iron sights even have a possitive cost, seriously...