Blade interchangeability?

[luna]

Any idea as to whether or not the CQC-7 blades can fit in a HD-7
handle? I have a number of CQC-7 blade types and thought it would
be pretty cool to be able to use them in a frame locking version.

 

[SIFU1A]

though some will interchange to some degree ya cant swap a liner lock to a frame lock it wont work.