ZURICH (Reuters), May 19 (TIWN) - Swiss voters agreed on Sunday to adopt tighter gun controls in line with changes to European Union rules, heading off a clash with Brussels, projections for Swiss broadcaster SRF showed.

The projections from the gfs.bern polling outfit saw the measure passing in the binding referendum by a comfortable 67-33 percent margin.

The restrictions, which apply to non-EU member Switzerland because it is part of Europe's Schengen open-border system, had raised hackles among shooting enthusiasts ahead of the vote under the Swiss system of direct democracy.