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It is compatible, however it would require converting the Ruger AR556 to a free float design from the factory drop in style. This would include replacing the front sight with a low profile gas block, and removing both the end cap and delta ring assembly.
Helpful Positive Review
Slim, Solid Rail
by
JW,
Verified Owner,
September 7, 2016
I was looking for a quad rail for a MK18 pistol build I was doing. While I fully understand the MK18 has a very specific parts list, I also knew there was no way I could afford spending over $1k on an upper. So an inexpensive build was the goal. Ther...
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cheep and efective. Had my worries about this product but after the unpacking and quick and easy installation of this rail system the quality is grate. Adds a nice look to the rifle, sturdy and holds true. i have fired quite a bit of rounds with this...
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Bad description listed as a clamp on . I is not you must remove the front . sight assembly y to install. not an easy install. it is not what I expected and I wouldn't wam]nt to install it . I don't want to wright more about it all I want is to leav...
Read More...