What is an MQ valve you may ask. It is the solenoid driven revolution that is taking the autococker world by storm. It replaces an ecockers bulky solenoid with a elegant presure balanced deisgn which reduces gun weight, kick, and with proper tuning increases effeincy.
Hmmm...the section in bold is wrongly worded.
It does replace the Sear solenoid, but that isn't the point. The point is that it replaces all the heavy moving parts, valve, hammer etc, which is what reduces kick.
I would say that the 11/16 size would fit. Best thing to do is measure the bottom tube of your marker, the internal diameter of the tube.
And also fire off an email to the manufacturers, but dont title it "When can I get" because they wont reply!
I thought, that after having the first 4 MQ valves in the UK, I wouldn't see many more these days, especially after what happened to PBX etc...I may be wrong!