Foam Blaster Fittings?

Now that I have a car worth washing again... I need to fix my foam spraying thingy.  I have this:

https://www.amazon.com/gp/product/B00F5MCL14/

But plastic green handle on it is broken.  I don't want to buy a new one because A) that should be a $1 part and B) it will probably just happen again.  

Is there an easy way to adapt a quality spray nozzle to attach to one of these?

Had a friend on another forum just have something similar happen.  Look for it on 3D printing sites.  You might be able to find something 

Could you MacGyver something up with parts from this??

https://www.harborfreight.com/extreme-foaming-spray-gun-57457.html?utm_source=google&utm_medium=cpc&utm_campaign=12144811130&campaignid=12144811130&utm_content=117789267798&adsetid=117789267798&product=57457&store=59&gclid=EAIaIQobChMIx_Oz5qai-QIVlCc4Ch240AcOEAkYBCABEgLypPD_BwE

Maybe that link works.

It looks like all you need is a garden sprayer that has a hose thread at its output. Used to be fairly easy to come by. Today, who knows?

I have something Iike that I bought at the dollar store for $20.  It threads onto whatever the standard threads are on a garden sprayer.  I think it comes with one of its own for convenience.

03Panther said:

It looks like all you need is a garden sprayer that has a hose thread at its output. Used to be fairly easy to come by. Today, who knows?

Ah like this:

I will take this one apart and see if the fitting has the same thread as the hose end.  If so, thats the easy button solution.

In reply to ProDarwin :

That's exactly the one I was thinking about! I've had nicer ones with hose thread on the output as well. 
At a glance, that's a hose thread on the foam gun in question, so I hope it works.