Some of the guys over at Weaponsguild.com have beat on me till I am running a small one time run of these for several of them who bought suppressors and got screwed on the pistons in the aftermath of the company shutdown........plan currently is to do a one time run of 1/2 x 28  9mm .......and .578 x 28 45 adapters........solid models are being made from sample adapters and will be machined in my shop from 17-4 stainless prehard.
As it is a small run they will be a little pricey...but then again the material to make them is over $220 for a 12 foot stick and we have to write a late and mill program for each variation.
5/8 x 24 is being considered as well.......so if you need one....post up here and I will compile quantities and see how much material I need to order.

Expected price will be $100 each shipped......less if the numbers bear it......Let me know in this thread. need to know caliber, thread, and quantity.
Rudy

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Nobody here have this problem...?