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Posted: 9/11/2004 4:18:22 PM EST
How high does an ARMS #40 L backup rear sight sit above the rail when it is folded down?

What about a standard ARMS #40?
Link Posted: 9/11/2004 4:57:28 PM EST
I am wondering this also. Are there any other differences between the #40 and #40L . I want to put one on an LMT upper and still be able to mount an aimpoint or an ACOG.
Link Posted: 9/11/2004 4:57:51 PM EST
[Last Edit: 9/11/2004 4:59:09 PM EST by AUT_BELLUM]
#40L is roughly 3/4" above the < ><-------- of the rail
#40L is low profile and will default to the small aperature
Link Posted: 9/11/2004 8:08:06 PM EST
Link Posted: 9/12/2004 8:21:05 AM EST
my caliper measures the 40l at ~.588" above the top of the rail. Cant help you out with a 40 thats another reason to build another ar. hope that helped.
Link Posted: 9/12/2004 10:45:57 AM EST

Originally Posted By AUT_BELLUM:
#40L is low profile and will default to the small aperature



I have a 40L and if you do not like the fact that it defaults to the small aperature, the small one can be easily removed. I have no need for the small aperature, so it went bye-bye.......
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