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Posted: 10/25/2004 8:12:41 AM EST
So I got the ARMS 40L Back up Iron sight and tried to slide it over the A3 rail on the top of the reciever of a Colt Match Target Competiton HBAR...

It wouldn't fit. it was too tight...upon measurement the rail on the reciver was about 2 thousands too big? I tried the sight on a budies A3 and it worked fine. I tried another ARMS BUIS and it wouldn't fit either.

Anyone else have this problem..what's the fix? Does colt oversize their picatinny rails on the A3 upper?
Link Posted: 10/25/2004 2:27:40 PM EST
Link Posted: 10/26/2004 7:15:52 PM EST
Than the slot on the BUIS...

The rail on the A3 is bigger that the slot on the 40l
Link Posted: 10/26/2004 8:45:26 PM EST
Link Posted: 10/27/2004 8:34:06 AM EST
I have, they've never heard of it...
Link Posted: 10/27/2004 8:51:09 AM EST
.
Link Posted: 10/27/2004 7:48:18 PM EST
"." what?
Link Posted: 10/28/2004 10:33:49 AM EST
Ari,

Have you tried another 40L? I have one that I purchased in May on my RRA upper. Maybe ARMS has a bad batch? Are you going to the 3-gun match at WSA on Sat? If you would like to see if there is any difference, you can try mine on your gun.
Link Posted: 10/28/2004 3:29:50 PM EST

Originally Posted By HomerSimpson:
Ari,

Have you tried another 40L? I have one that I purchased in May on my RRA upper. Maybe ARMS has a bad batch? Are you going to the 3-gun match at WSA on Sat? If you would like to see if there is any difference, you can try mine on your gun.



Tried a different one it fit fine on another upper...tried another ARMS sight...it wouldn't fit either.

Maybe I should file off a thousand off either side.
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