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1/9/2014 2:24:08 PM EDT
OK here it is.

I have a mid length  BCM 14.5" upper with front sight tower and I was wanting to know if I can use a VTAC Alpha rail and still keep the front sight tower.

I am going to have a BCM Mod 1 comp put on to bring it to the legal length and would have all done at one time.

If it is possible to put the VTAC Alpha rail on and keep the front sight tower what size the 7" or 9.

Thanks for all answers in advance.

Not sure if this question goes here so mods please place where appropriate.
1/9/2014 2:34:27 PM EDT
[#1]
What length gas system?
1/9/2014 2:53:55 PM EDT
[#2]
I thought I put mid length.

My fault.

1/9/2014 3:44:00 PM EDT
[#3]
Yes, 9". I had this on a rifle at one point. There was about 1/8"-1/4" of gas tube visible.
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