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Page AR-15 » Optics, Mounts, and Sights
AR Sponsor: bravocompany
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Posted: 1/15/2013 5:35:39 PM EDT
I've got a set of the older C4 diopters that have the notch aperture. I can't figure out how to adjust the elevation on the rear one. Granted I don't have the $50 special tool but I've compressed the locks with a pair of snap ring pliers then nothing. Does anyone have experience with these?
Link Posted: 1/16/2013 4:53:32 AM EDT
[#1]
My experience is with the HK sights, but if you can't turn the drum with the lock tabs retracted then the drum is seized.  Squirt a little wd-40 in there and see if that frees it up.  IMO the $50 tool is a waste of money.  I use a $10 pair of needle-nose pliers (modified by narrowing the tips with a file) that works much better.
Link Posted: 1/16/2013 5:58:14 AM EDT
[#2]
Drop Monty an email, he's a good guy and will offer help.
Link Posted: 1/20/2013 8:03:09 PM EDT
[#3]
Quoted:
My experience is with the HK sights, but if you can't turn the drum with the lock tabs retracted then the drum is seized.  Squirt a little wd-40 in there and see if that frees it up.  IMO the $50 tool is a waste of money.  I use a $10 pair of needle-nose pliers (modified by narrowing the tips with a file) that works much better.


Ding Ding! I lightly heated the drum and oiled the threads and it broke loose. All is well now. Thanks!
Page AR-15 » Optics, Mounts, and Sights
AR Sponsor: bravocompany
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