The endorsements are here, the endorsements are here

For me, as a voter, I don't give a hind's end about endorsements, but others might.

NRA endorsements for Iowa (and I see that Kent Sorenson in District 37 gets the endorsement over Staci (vote on one gun bill) Appel.

Gun Owners of America has a slightly different take on Iowa

Thanks to David Codrea of pointing these resources out.
Gun Owners of America releases 2010 candidate grades
And
NRA ratings