Been looking at the instructions to fit the light guards. All seems straightforward......but, one part puzzles me:-

It indicates using a pop-rivet gun to fit the gromits into the wing.

I already have a pop-rivet gun, but cant for the life of me figure out how I use this gun to install these gromits.

Am I missing something? Is there another type of rivet gun or part I need specially for putting these in?

I think it should say Riv Nut gun, similar to riveter, but you put a threaded insert into the bodywork which crushes same as a rivet and leaves a threaded anchor point in body,similar to a captive nut. i bought one off flea bay

Thanks Lizalandy.

Found them on the net and now understand how they work too.