Where to source QB/Gauntlet tank block?

I was able to purchase one a couple pf months ago. Called up Umarex, selected the parts department extension, they still had me in their system. I gave them the part#, momentary silence, I hear mumbling in the background, then I am asked something to the effect "what do you need the part for" I reply "it's for my gauntlet" another pause, more background mumbling, then I was asked for a form of payment. I would follow this script.

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I was able to purchase one a couple pf months ago. Called up Umarex, selected the parts department extension, they still had me in their system. I gave them the part#, momentary silence, I hear mumbling in the background, then I am asked something to the effect "what do you need the part for" I reply "it's for my gauntlet" another pause, more background mumbling, then I was asked for a form of payment. I would follow this script.

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What are the part numbers for the drop block and whatever else you show in the image?
 
Well, sad day. Called Umarex and they do not send tank blocks out anymore.

Screw Umarex. They came in, put some "fancy" stock on a QB79 HPA conversion and called it groundbreaking, when people like Bob Sterne and @nervoustrig had been masterfully modifying QB's for YEARS. Umarex has apparently worked out some deal where they get exclusive rights to the QB guns/parts and have choked out small businesses such as Archer, FDAR, etc.

Maybe I'm being dramatic, but it feels like it's the end of an era. Converting Crosman/QB guns to PCP via the tank block conversion was the dawn of widespread, regulated PCP's and it's over. I feel like a man who's visited his home town just to see that all the special places of his youth have been wiped out by a Walmart or something. It's the end of a freaking era.
 
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yes it comes apart, bottle regulator screws directly into the block, standard 1/2G, but it doesn't have a valve pin depressor, I used a 4mm screw and cut off the head, cut to about 15mm long and tapped the hole directly in the middle and screwed it in tight to make it a valve pin depressor, you will need to do some sort of machining to the part to fit your needs.