Get values from url parameter

I have a page with a list of products, each product has a link, this link has this structure http://domain.com/?page_id=1468&m=10HA-PT where “m=10HA-PT” is the model of the product.
Is there a way to I can get this value in a text field to send this in a quote form?

http://wordpress.org/plugins/visual-form-builder/