Thanks,
can't wait to take it down the club and do some rapid fire!
I couldn't find another post about the 33 senior on here when I was researching it so thought I should put something up for future reference.
On that topic.... for future reference here's the sketch Vic made with meaurements he took from an original Haenel 33 senior magazine.
The top of the cutout slot is 38.84mm from the flat top of the magazine, much lower than all the other Haenel mags.
[IMG][/IMG]
I cut and filed mine down to 39.16mm from the top of the mag and it fit's in fine, so there is a bit of wiggle room.
What you dont want to do is file it too high then the bb release tab on the top of the mag might not be depressed enough to release a bb.
Cheers,
Matt