Rep. John Shadegg's (R-Ariz.) pending retirement prompted a stampede of candidates vying to succeed him. In the hopes of standing out, former state Sen. Pamela Gorman (R) has put together an action-packed Web video.

Scenes vary from her blasting the desert with what appears to be a Tommy Gun, to her emptying the clip from a pistol, to her firing an M-16 assault riffle.

"Rated 100 percent by the NRA, conservative Pamela Gorman is always right on target," the announcer says.

Gorman has trailed in fundraising but she has the support of conservative blogger Erick Erickson.

Democratic strategists call it a sign the primary field is shifting to the right.

The field includes Paradise Valley Mayor Vernon Parker (R), who has fundraised with controversial Maricopa County Sheriff Joe Arpaio, and attorney Ben Quayle (R), the son of the former vice president. The vote is in August.