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9/12/2013 3:22:01 PM EDT
Can anyone explain the differance in theses 2 rail systems to me?

http://troyind.com/%20/rail-systemsaccessories/rails/ar15m16-rails/drop-in-rails/two-piece-drop-in-rails/troy-battlerail-drop-in-carm4

http://troyind.com/%20/rail-systemsaccessories/rails/ar15m16-rails/troy-enhanced-drop-in-battlerail-7-carm4

9/12/2013 3:33:08 PM EDT
[#1]
Edit: One has an extended rail section , so the rail will continue from the upper to the hand guard, instead of having the gap near the delta ring.

Example..



And here without that extended rail section.

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