Machete

What originally started as a gag trailer in Grindhouse (Planet Terror, Death Proof) has turned into Robert Rodriguez' next film.

These are the guns seen in the newest trailer

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Machete (2010)

Walther P99

One (possibly two) heavily customised P99s can be seen on a table of guns in the trailer

File:Table of guns Machete.png

(red circle) The pistol on the left is a P99, but the one on the right I am not so sure about

Tec-9

A Tec-9 can be seen on the same table of guns

File:Table of guns Machete.png

The Tec-9, circled in yellow

M1911-Style Pistol

Seen on the table of guns

File:Table of guns Machete.png

The pistol is circled in purple

M16-Style Rifle with scope

Used by Machete during his attempted assassination of the Senator (Robert De Niro)

File:M16 style rifle with scope Machete.png

Magnum Revolver

Used by Lindsay Lohan's Character during the trailer

File:Magnum revolver Machete.png

Unknown Assault Rifle

Used by Michele Rodriguez' character during the trailer. It is too obscured by prop parts to make a decent guess. It could also be a prop gun too

Unknown Sniper Rifle

Used by the man who shoots Machete and sets him off on his quest of vengeance

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Notice how both the rifle and the actor holding it have changed from the original (the one in Grindhouse) trailer