i have a meelee weapon model how can i put it in the game as weapon?

You can get this program.
Segment welder and Weapon Welder.
https://forum.game-guru.com/thread/215094?page=1

Or there are the 3ds max weapons rigs in the files/docs folder, that you could mess with.
But you would need model, rigging, and animations skills for this method.

its a static model i like the sword that comes with guru i cant just put it like adding new entity by mesing with the weapons fpe file for example take the sword fpe file and modifie it

No you cant. The weapon must be attached to the hand dummy in the weapons HUD, You will need an animation program or the weapon welder program to accomplish this.

Open the HUD.x of the medieval/sword gun file and look how it is rigged and animated in fragmotion.

The problem with pre rigged stuff is switching things out without breaking the rig. Takes a little knowledge.

there is no hud.x in weapons folder

Then you are looking in the wrong place. A weapon cannot work as a player weapon without a HUD.x

There are two locations for weapons:

1. files/entitybank/weapons
This is where the physical item you place in the editor is located, this is NOT your player weapon, it's a physical model in the editor.

2. files/gamecore/guns
These are the actual player weapons and all of their associated files.

This folder will contain a folder named for its type (modern, fantasy, scifi etc), and in each of those folders will be a folder for the actual player weapon, in those folders will be the following files (plus or minus some of the sound files, not all weapons have all the sounds):

thanx for the info so i need to make the hands atach my object animate them and the make a gunspec file.
right?

yes, you do.