neophyte wrote:What does it do?
I've only seen the photos/adv...
**but** ... IMHO: time spent "practicing" the (dis)assembly two-three times
then again a day or two later... and again... will be better spent than
working to install the 'speedo'
then you can dis-assembly other MKx, too. Not just the one with it installed.
By Coincidence (my MKx's are II's, no III's in the herd), at the range
the other day, a young-feller had a new shiny MK3-22/45 and I offered
to "give him a lesson" on the field-strip... yeah, forgot and fumbled
at every turn when the Mag needed to be inserted/removed!! D'oh,
so much for my "experience"...
anyway... the Field-Strip instructions (somewhere here) should be adequate
to get some practice. *my trick* is to insert the MainSpring WITHOUT the barrel/receiver
and carefully observe the placement of the hammer&strut for each step
to get a mental-image of how/why the pistol needs to be held at the
various angles... for the strut to hang freely and insert into the MainSpring-Cup
as you close the latch... Good Luck.