can anyone solve this difficult riddle for me pls...

Ok, what i've got so far:

It has 7 letters, the second letter being the first in the alphabet. When you exchange it with the 15th letter in the alphabet (o) the word still has meaning.

So far the only word I can come up with that seem to fit are:

Battles/Bottles

After looking at it, it could also (possibly, with a stretch) be Time.
Time is a destroyer of men, the first letter seen (#1 in 12) is also the second (#1 on the dial) exchange it with 15 and it's less deadly, meaning you'd have more hours in the day, more time.

That's a stretch, and I have no idea how the seven pieces fit into it.

i may have the final part
what if the number 7 relates to the days of the week then if would mean time

The seven deadly sins? Does this go anywhere for anyone else

Pride

Anger

Sloth

Greed

Gluttony

Lust

Envy

I'm not sure but maybe the world...seven contenents...maybe...

The first letter seen is "my second".... Ring any bells?

The only reason I suggest this is because i couldn't find a word starting with the same letter in the first and second places

warrior & worrier almost work

nope "The first letter seen is my second." - it doesn't fit

hmmm...

What am I?....I am a destroyer of men!

If that's the answer then I'm going to go sulk in the closet for a few days.

What destroys men? Let's go with the idea previously suggested that "time" is a solution.
The suggestion that "seven" refers to the days of the week seems to me not far of a jump.
Furthermore, the first letter (of the riddle) is "I". The second letter of the word Time is also "i".
If you replace the letter "i" with the fifteenth letter of the alphabet ("o") then you get "Tome" which is certainly far less deadly than it could have been.
I think that "Time" is really the answer.

Cyanide? I don't know.

Battles/Bottles! That's it!

I am actually going to agree that the answer is 'battles.' Here's why:

There is a focus in this riddle on letters. Battles are a destroyer of men, and the seven pieces can refer to the seven letters in the word 'battles.' The first letter seen is going to mislead you and make you think it's the first letter of the riddle, but the first letter seen in the alphabet is 'a.' Therefore, the first letter seen is my second, and the second letter in battles is 'a.' If you replace it with o, you get bottles.

So battles may be a viable answer, but so might be warrior.

Need help with a possible riddle
I think this is a riddle but i cant be sure, and if it is a riddle could you help i have no idea what the answer could be.

nothing to no-one

You look at the picture, you guess my name ;
Doesn't matter its all the same.
Turn away in horror, forsake me,
When will you all realise it's not too late to see ?

The first letter seen is 'I', so that's the second.
Exchange that with the 15th that's 'F'
I don't think it has nothing to do with the alphabet. It has to do with the riddle itself.

I thought that it was Sins because of being deadly, and then it could have been Sons(when changed), but 'O' is not the 15th, unless that's a mistake.

Best I got.