I believe These have invector plus chokes . I have chokes from a 525 Sporting pretty sure they are invector plus as well. Can anyone verify and if so the 525 chokes can be used in the Cynergy ?

The stock on Cynergy is adjustable is this fir height only ? I saw somewhere on one of these Cynergys the adjustable piece pops in and they had cast on & cast off ?

Another question is has anyone added weight to stock. Saw a few comments about adding weight but no clear explanation - saw one mention of roll of nickels and a Spring ! Seemed practical

Just refer to the manual: https://www.browning.com/content/dam/br ... OM_WEB.pdf .

regarding cast the manual says " some " cynergy's have adjustment for cast as well as vertical

I'll have to ask shop to see whats inside the box - the cheek pieces should be clearly marked if they are present

I put weight into my wood stock. I don’t know the composite stock innards. If it is hollow (many are), then you can do many things, to add weight. Just make sure that it is fixed in place.