There are six aluminum knobs located on the thrower that collectively are termed the "gun knobs".
The "hat" knob and "shaft collar"
The "front knob" next to the clippard and "stream adjuster knob" on the top by the vent
another view of the "hat" knob and "shaft collar" next to the heatsink
The "side discs" also the outermost knob is knurled on GB2 semi heros
