I have a 100% save game and i don't see the machin gun in my game style...
Or i can get the machin gun only from the creates?

There is no machine gun.

The sentry gun is only in a few schemes.

i mean to this weapon
http://www.wormsmayhem.com/images/downloads/screenshot11.jpg
and i remember i played with that in the internet and in multiplayer.
but now i can't see it now.

i mean to this weapon
http://www.wormsmayhem.com/images/downloads/screenshot11.jpg
and i remember i played with that in the internet and in multiplayer.
but now i can't see it now.
That's the Sentry gun - read the second line of Alien King's post.

Y it's not on the regular game :( ? it's a good weapon

When creating a weapon scheme, start it with the Darksider scheme.

...or just get the Kitchen Sink scheme, which is unlocked only after you unlock all character sets.

Hint: "The Kitchen Sink" weapon scheme:
This includes every weapon, including the five secret weapons, with unlimited ammunition and no delay (2,500 coins). Unlock all character sets do get this bonus.