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2/13/2012 5:50:10 AM EDT
Just installed troy alpha rail and there is a small gap between rail and reciever.  Maybe business card lenght.  I know it is no big deal but I am just picky.  Is there any issue or problem with moounting my optic over the small gap?
2/13/2012 8:32:11 AM EDT
[#1]
Mount the optic on the lower receiver flattop portion, not the upper barrel side.
2/13/2012 8:45:09 AM EDT
[#2]
is there a reason why?  just curious.
2/13/2012 2:13:36 PM EDT
[#3]
Some people say that mounting on your rail is not solid.... others argue that since the free-float rail is solid, that the zeroed optic will hold its zero.

As for bridging...I honestly don't know, but would like to find out.
2/13/2012 5:01:16 PM EDT
[#4]
Albeit very minimal, there is a certain amount of flex that occurs between the upper receiver and rail during firing.  This may lead to the mount coming loose, possibly a POI shift.
2/13/2012 5:08:45 PM EDT
[#5]
is it safe to say that the aimpoint is zeroed out of the box?  I basically rebuilt this gun and have not had the chance to zero my sights.  Larue flip up front and back.  When I put on the aimpoint everything cowitnessed perfect but I guess only the range will answer my question.
2/13/2012 5:36:40 PM EDT
[#6]
Quoted:
is it safe to say that the aimpoint is zeroed out of the box?  I basically rebuilt this gun and have not had the chance to zero my sights.  Larue flip up front and back.  When I put on the aimpoint everything cowitnessed perfect but I guess only the range will answer my question.


What?

Every weapon is different. You to zero the irons and optics to that weapon with a consistent ammo type.
2/14/2012 4:35:20 PM EDT
[#7]
Quoted:
is it safe to say that the aimpoint is zeroed out of the box?

No.  It will probably be close enough to get on paper, but will need to be dialed in with live fire.  

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