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AR15.COM
9/10/2015 3:56:12 PM EDT
Is the collar used with the DD Lite Rail II the same as the one used on the DD RIS II?  I can't find any photos to compare the two?
9/11/2015 3:50:08 PM EDT
[#1]
They are different.  The Lite Rail II is a 4 bolt pattern while the RIS II is a 6 bolt pattern.
9/11/2015 4:25:57 PM EDT
[#2]
Ok, then is the collar the same for the original Lite Rail and the RIS II?
9/14/2015 10:54:47 AM EDT
[#3]
Quote History
Quoted:
Ok, then is the collar the same for the original Lite Rail and the RIS II?
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Negatory.

AR15 Lite Rail (Original) - Bolt Up Plate is Proprietary

RIS II - Bolt Up Plate is Proprietary

AR15 Lite Rail II - Bolt Up Plate is Proprietary

AR15 Lite Rail III (DDM4 Rail) & SLiM Rail - Bolt Up Plates are the same.