Which length do I want? I would like to use the Longnose if that's possible but fear it could be too long?

I have the regular chassis and a 4.5" barrel.  The long nose is 3.75" longer, so without a suppressor, i'd think its a good 3" too long of a chassis.

This is the "multi" (without the CF tube on it) with a 6" Kidd barrel.

CHRIS

Does anyone have any pictures of the long nose chassis and a 10 inch barrel?

This is the setup I want, but ... I talked to PMACA and the long nose chassis is made to use the KIDD rear tang hold down. The long nose chassis does NOT have the cutout to hook the trigger pack like most 10/22s stocks have.  This only applies to the long nose chassis.

I agree the tang hold down would be nice, but unnecessary and would force you to modify any other stock you might want to use.

The other PMACA chassis’ work fine without the tang hold down. PMACA says they are working on a fix, but for now I’ve decided o wait.

The 4.5" barrel and the standard chassis will not allow for a suppressor to screw down onto the barrel unless you have PMACA do a relief cut. They did mine but sadly the radius is not deep enough and only my spectre II will work. The Mask & SR that I have are too fat.

Going with a 5" should be perfect, but will most likely loos the bulk pack = sub sonic attribute.

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After reading your comment about your issue with the PMACA chassis and the Mask, in another thread, I emailed PMACA and explained my planned setup.  They replied and said to put (Subsonic) in the notes box upon checkout.  I did that, as well as gave another detailed explanation in the notes box in order to hopefully avoid confusion.  Mine works perfectly with my Mask.  Not sure if mine was a one-off, or if your experience changed the relief cut that they now perform on the "Subsonic" stocks.  Most likely the latter.  So thanks for being the pioneer for this setup.  

To the OP's question, here is my standard PMACA "Subsonic" chassis with a 4.5" barrel...



And here it is with the Mask installed...



Comparing your 4th photos and this one, it's easy to see that the forward relief cut is deeper on mine....

Looks good. I told them of my issue and sent pics. They may have corrected it after that. Mine as far as I know was the first one.