I have acquired at the appropriate price of free. ( a price that fit my budget) it doesn't work  but i have ordered a firing pin
those are like $25 which isnt too bad but now that I already have $50 in various parts i don't want to spend tones of money of a magazine catch arm ii was wondering if anyone knew of one that would cost less then $40 it doesn't have t be pretty just functional i would like it to work ive heard of people making them if  anyone knows how or has specs i would appreciate it, just looking, or if you happen to have one for cheep
just looking ide appreciate some help some where or some way to make this work,

I recently had a need for some info about the same model.
These three sites answered all my questions:
http://www.calguns.net/calgunforum/showthread.php?t=623412
http://mrcompletely.blogspot.com/2005/06/intratec-tec-22-rim-fire-race-gun.html
http://www.thektog.org/forum/f100/tec-22-help-pics-207228/

Mine worked great with 10 and 25 round Ruger mags.
I had to push the mag forward and up to properly seat it and it ran 100%

$40 is steep!  I did see this site buried on one of your links.





http://intratecparts.com/