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1/25/2018 7:38:29 AM
Posted: 2/13/2006 4:13:51 AM EST
I plan on making a integral 9mm upper for my AR-15. My suppressor is a 1-1/2" suppressor which is about 1/4 inch larger than most 9mm suppressors.
What is the inner daimeter of a KAC rail system?
Are there any other rail systems that can accomidate a 1.5" can?
Thanks Mike K
Link Posted: 2/13/2006 5:16:00 AM EST
Did you try calling the companies directly? I'm pretty sure the YHM handguards will fit, but give them a call.
Link Posted: 2/13/2006 5:49:50 AM EST

Originally Posted By Medic17:
I plan on making a integral 9mm upper for my AR-15. My suppressor is a 1-1/2" suppressor which is about 1/4 inch larger than most 9mm suppressors.
What is the inner daimeter of a KAC rail system?
Are there any other rail systems that can accomidate a 1.5" can?
Thanks Mike K



Sounds like you need a "tube" forend. The odd "+" shape of the DD and Larue makes it a little internally restrictive.

PRi comes to mind, and would be my first choice in your situation. PRi tubes have a 2" OD, and they're what MSTN used when he did a run with integral suppressors.
Link Posted: 2/13/2006 7:25:25 AM EST
What suppressor is it?

My CAC 9 doesn't fit under most handguards, actually it hasn't fit under any I've tried yet.
Link Posted: 2/13/2006 10:59:22 AM EST
Link Posted: 2/14/2006 11:10:59 AM EST
A 1.5 can will fit inside a YHM 4 rail FF tube

hope it helps


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