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Page AR-15 » Optics, Mounts, and Sights
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Posted: 10/10/2003 10:01:34 PM EDT
Link Posted: 10/10/2003 10:53:30 PM EDT
[#1]
One will do, I put some blue locktite on the screw, hasn't come loose yet.
BUIS favs seem to be split between ARMS 40 and KAC 300M, can't go wrong with either. I like the KAC because of its lower profile when folded.
Link Posted: 10/10/2003 11:20:14 PM EDT
[#2]
#40 will fit under the ACOG with ARMS #19s.  

One screw is fine but I would ask Trijicon to send you the additional screw, little insurance is always a good idea.
Link Posted: 10/11/2003 6:07:49 AM EDT
[#3]
Trijicon no longer sends out additional screws  (guess we overwhelmed them) but it is a 10/32 1/2" screw that comes with the ACOG (3/8" for the flattop mounts).

I used the single screw on mine with no issues (did use blue loctite) for awhile and eventually added a second screw just for peace of mind; but never had anything to indicate it was necessary.
Link Posted: 10/11/2003 7:45:00 AM EDT
[#4]
You can buy the 10-32 x 1/2" buttonhead screws at any decent hardware store for about twenty cents, a much better deal than the same thing from Trijicon.
Link Posted: 10/11/2003 8:46:42 AM EDT
[#5]
SMGLee is right of course, #40 will fit below either the 19S or Trijicon's own TA51.  There's not enough clearance to slide a single piece of paper between the bottom of an ACOG and the #40, so close to touching they are.
Link Posted: 10/11/2003 9:18:01 AM EDT
[#6]
Quoted:
SMGLee is right of course, #40 will fit below either the 19S or Trijicon's own TA51.  There's not enough clearance to slide a single piece of paper between the bottom of an ACOG and the #40, so close to touching they are.
View Quote


Can someone post a picture of this so I can see what you all are talking about?  Thanks in advance.

Edited to add: I'm thinking about a TA31 for my USMC A4 project so I need to figure this out.
Link Posted: 10/11/2003 9:40:30 AM EDT
[#7]
Quoted:


Can someone post a picture of this so I can see what you all are talking about?  Thanks in advance.

Edited to add: I'm thinking about a TA31 for my USMC A4 project so I need to figure this out.
View Quote


Here is my M16A4 clone with TA31, TA51 and GG&G MAD.  #40 would not fit:

[img]http://photos.ar15.com/WS_Content/ImageGallery/Attachments/DownloadAttach.asp?sAccountUnq=6430&iGalleryUnq=457&iImageUnq=5891[/img]

Here is a TA31 in a 19S w/ #40 compared to the TA31, TA51 w/ MAD:
[img]http://photos.ar15.com/WS_Content/ImageGallery/Attachments/DownloadAttach.asp?sAccountUnq=6430&iGalleryUnq=457&iImageUnq=18187[/img]
Link Posted: 10/11/2003 11:31:29 AM EDT
[#8]
Thanks bsbg!

It was that rifle of yours that FORCED me into building an M16A4 clone in the first place [;)]
Link Posted: 10/11/2003 11:50:50 AM EDT
[#9]
Link Posted: 10/11/2003 12:41:46 PM EDT
[#10]
Quoted:


It was that rifle of yours that FORCED me into building an M16A4 clone in the first place [;)]
View Quote


Glad to be of assistance.  [8D]
Link Posted: 10/11/2003 12:43:17 PM EDT
[#11]
Can you co-witness with an ACOG or do you have to remove the ACOG to use the BUIS.
Link Posted: 10/11/2003 2:13:42 PM EDT
[#12]
Quoted:
Can you co-witness with an ACOG or do you have to remove the ACOG to use the BUIS.
View Quote


The ACOG is magnified so you would have to remove it to use the BUIS.
Page AR-15 » Optics, Mounts, and Sights
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