Inline + Mystery expansion chamber

[The Great Equalizer]

The top half is an inline expansion chamber. It has a male ASA on top and a female ASA on the bottom. I used to have one on my Pro-Lite for winter games. I was never sure if it worked or not, but I know it took a pipe wrench to unscrew the tank from the expansion chamber and the expansion chamber from the gun, so I only used it for a few games.

The bottom half looks like it has the same male ASA, but instead of the female ASA its threaded for an air line.

I've nevr seen this variant.

https://www.ebay.com/itm/334586852893?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20201210111314%26meid%3D4efbba4b136544e294b94b4a0d305c97%26pid%3D101195%26rk%3D4%26rkt%3D12%26sd%3D273803959201%26itm%3D334586852893%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv11WebTrimmedV3MskuAspectsV202110NoVariantSeedKnnRecallV1%26brand%3DGeneric&_trksid=p2047675.c101195.m1851&amdata=cksum%3A3345868528934efbba4b136544e294b94b4a0d305c97%7Cenc%3AAQAHAAABIMFr2e4EmAnM%252ByHZkULYKDIJ4L66fOjNL0iupgt%252BzO1%252F3AE1t3mNirUYB96NktMCicMagiS6mbeTl0xquGODv9lXYmsG0%252FPiarNcWW%252FkRVBWZ6D3M99DPeWCVEIhGe2eUOTNw6YdrMPN%252Bo%252F2phwvU8JX1nN4yFyIriRctkZ1sNEe%252BiGQsY9YyoKwTVjCxUR7MpLoCBv13xfUgooLsCcQSxonG7vcTI9KeQLAx%252FWQBg8SMSrlXMWLjD%252BV591Kh0XzEvVi93F6MN9uBUqVM6MwUddC%252FhSqM4iOZipSswivwIA6tPgyCXzdx3tp%252BaPHsRWrs%252B78F03KSOuJzVMXbHE89c7SRVXmHxBRZ6doo5B1t%252F9CcTaWDwZOK2Chm5n854QKsA%253D%253D%7Campid%3APL_CLK%7Cclp%3A2047675

[Toestr]

I've also seen a version of this with 1/8npt on both sides.

Sent from my Pixel 4a using Tapatalk

[RuleOfSines]

I think I have one of the bottom half there in a box somewhere, labeled as a Spyder upgrade.

[RuleOfSines]

Never mind, this is the npt on both ends.

[Morgenstern]

Yeah I think these were sold with the idea you could daisy-chain them with a remote line attached. A few different fittings were made so that could happen