BD Wire Cutter 16.2 CNC Aluminum Rail Kit A type(BK) For M4 GBB [BD9266AGB]
Price :
$129.95
I picked this up for my WE M4 T-91. This thing is a beast, couldn't wait to install it. Was very easy to install...the only extra tool you require is a barrel nut tool to remove your current nut (not required for new installation)...everything you need is in the box as seen in the pictures shown on the site...couldn't be more pleased with the update to the ol' girl....