Thread sizes for barrels

[Dauntless152]

I’m talking with a machinist who is going to try to make a Cocker adapter to CCI. So you can put phantom barrels on Cocker threaded markers.
what I need to find out is the exact measurements for both barrels , thread sizes and pitch.
Pictures with measurements would be amazing as well.

[Cyberpyr8]

You mean one of these?
https://stanchy.com/products/ssc-cci...barrel-adapter

[Jackson]

You mean one of these?
https://stanchy.com/products/ssc-cci...barrel-adapter

Wrong direction. He wants to put a Phantom barrel on a cocker threaded gun. That adapter puts cocker barrels on a Phantom.


Cocker barrel thread spec from ZDSPB.com and Manike/Simon Stevens of Inception Designs: http://www.zdspb.com/media/cadfilepo...arrel_spec.PDF

[JonM]

Cocker: 15/16"-20
Phantom: 7/8"-14 ACME

[flyweightnate]

Acme Stub - a little different height.

I'm measuring .860 dmaj, .032 width of flat, and .800 dmin, best I can measure. So it's even a bit loose/ undersized per Acme Stub standards.

[Alexndl]

Picture for thread location
http://www.docsmachine.com/tech/barrelguide.html

I dont own a phantom anymore so cant help with measurement more than this

[flyweightnate]

I commented above, but here's a post:

Phantom is Acme Stub, 7/8-14 but undersized. Both a CCI and DW barrel measure .858-.860 Dmajor, .800 Dminor, about .032 across flats with 29 degree flanks.

My barrels are bored, so it's .750 sticking out .150 past the first thread. The barrel inserts a total of 1.125" into the body. The o-ring gland is .450 to .535" from the end.

For an adapter, I'd make sure that unthreaded projection is measured on a non-bored barrel; it might be a large as .800 to match Dminor.