OREGONLIVE.COM 15 Hours Ago Five residents of Gresham, Troutdale, Fairview sue Multnomah County claiming gun-control law doesn't apply by Aimee Green Five residents of cities in east Multnomah County filed suit Friday against the county, claiming county commissioners overstepped their bounds in April by passing a gun-control law banning loaded firearms not only in unincorporated areas, but city limits, too.The residents argue that county commissioners only had the power to limit guns in unincorporated areas — which amount to about 2 percent of the county's roughly 750,000 residents. The lawsuit contends that the commissioners' powers do not apply to more conservative-minded residents within the city limits of Fairview, Gresham, Maywood Park, Troutdale or Wood Village — even though the gun-control ordinance states: "This ordinance will apply countywide unless a city within Multnomah County enacts separate legislation on this same subject matter." The ordinance,