Looking at buying a QB79

[Millipede]

but I really want a thumbhole stock and all i see available is the target stock and only the qb78 comes with a thumbhole. It looks like others have added a bottle to theirs with an adapter. Is that the same adapter archer sells for the 79?  would it make the gun very front heavy or too long? I plan on using 90gram cartridges until i get my own co2 tank fill station

I may just get the target stock. How does it compare to the thumbhole stock though? I really like the feel of pistol grips

[Millipede]

i feel like i put this in the wrong gate. Can we move it to General, please?