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Discussion Starter #1
This is to help with identification of WWII Garand sights
The Type I Lock Bars are somewhat rare and the hardest of all sights to find, much harder than the earlier SA flush nuts. They were only used for a 5-6 month span. Last Type I sight I saw sold for $950 . These are not to be confused with the later type II and type III lock bar sights. Those sell in the $130 or less range




Type I locking bar on the right, Type III on the left (type II has same size hole, just the ends of bar are rounded)
The type I has a smaller pinion thread hole

Type I on right
The type I has a short pinion with 6-40 threads , type I & II has long pinion with 8-36 threads. As you can see the type I bar is only screwed on by a few threads.


The earlier flush nut sight uses the same short pinion as the Type I but a spanner or flush nut to secure it


You couldn't disassemble the flush nut sight without a tool. The end of the combo tool (with two pins) was used for this
 

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Discussion Starter #4 (Edited)
Yes were replaced because not easy to adjust, had to use the "tool" The sights were then changed to Type I lock bar which used the same short pinion as the flush nut.
Those were phased out as the lock bar would come loose and possibly fall off .
They were then changed to the Type II and III lock bar which used a long pinion. The end of the pinion was also staked to keep the locking bar from falling off
 
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