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Matrix M4 CQB-R Convertible Barrel Adapter / Extension Set (14mm-)
by Derrick C. Date Added: September 3, 2008
This will fit any 14mm negative thread. (DBOY has 14mm negative FYI)

All 3 sets can screw onto each other and so it can be used to install a M16 free float on a M4 if you want to convert your M4 into a M16....

Rating: 5 of 5 Stars! [5 of 5 Stars!]
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