GBBR Hop up help

You've broken the rubber, or the actual unit?

The rubber is a standard AEG one, so any AEG hop rubber will fit fine. G&G Green ones are actually really good though, in my experience anyway. Best for very tight fitting hop units, because they're made from very thin rubber.

I'd recommend Systema Black rubbers more generally, I had great results in my ICS L85.

The actual unit is probably a proprietary one, I doubt there are any alternatives aside from just buying another of the same, as far as I know it's a unique gas system, so it'll use a unique hop unit too.

 
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