Problem unwrapping

So i got a problem unwrapping the top part of a cylinder of a mp5 and i got this

any help i can get

Could start by telling what the problem is, asking actual questions, not scaling your screenshots, and providing a .blend file.

the problem i got is that it doesn’t scale correctly to the cylinder and stretch to short

here is the blend flie

That is caused by non-uniform object scale (other objects have that too)

Ctrl+A -> scale in object mode to apply scale. After that, edit mode, select all (A), W -> remove doubles to remove double vertices, unless there are intentionally split edges.

Unwrapping should then work. You could try changing unwrapping options on the operator panel.

it work thank you for helping me i really appreciated