Greg Ginn

As you can see. Ginn is playing his "Custom" Dan Armstrong right here. Ginn modified his Dan Armstrong with a Les Paul-style stop tailpiece and a variety of pickups that would frequently have to be replaced when the pickup shorted out.

Greg uses one of these Modulus Graphite Black Knife strats, his one has one pickup and one volume knob - sort of like a Tom Delonge strat

In this photo by Marc Arsenault, Ginn can be seen playing a Westone Spectrum SX with his band ‘Gone’ in 1986.

Here’s a photo from 1978 showing Greg recording the guitar tracks for the Nervous Breakdown EP. If you examine his guitar closely, you'll see it has a Flying V-style headstock, a light body and a black pickguard. I suspect it’s an Ibanez Rocket Roll, as Chuck Dukowski owned an Ibanez Rocket Roll bass around the same period.

This guitar was bought in 1986 after one of his original Ampeg Dan Armstrong guitars was stolen.

“According to Henry Rollins’ that guitar disappeared out of the Black Flag van on April, 16, 1986, in Poughkeepsie, New York, while road manager Mitch Bury watched it happen from inside the van. According to Rollins "the guitar was stolen through the open window on the passenger’s side." Rollins noted that Ginn went off immediately to buy a replacement guitar, which turned out to be an all-black 1986 Ibanez Roadstar II.”

In this photo of Gone from 1986, Greg is using a black Ibanez IMG headless MIDI guitar