NCStar Quad Rail For Carbine Weaver Style Matte Black

A: Hi Grant, Yes the NCStar MAR4S Quad Rail will fit your AR556. Here's a video showing it installed -- https://www.youtube.com/watch?v=Z2FLJT3YR5o&t=102s

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A: This will be a perfect fit for the Ruger 556 AR-15 Grant.

A: yes it will fit like a glove

A: Christopher this will be a "Drop In" fit to replace the carbine length standard rail of your S&W M&P Sport II.

A: Yes it will fit just fine on your S&W M&P sport II

A: Hi Christopher, Yes this will work without issue. It's pretty much drop in installation.

A: Hi Benjamin, Yes it will fit no problem.

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A: Same deal. Yes it will Wilfredo. This will be drop in with no modification required.

A: yes it will fit

A: Thomas, no it will not. It will not clear the "Piston" Block towards the front.

A: Hi Jesus - So, you are discovering the many possibilities with AR rifles to customize them and make them into just exactly what YOU want! That's a big part of the fun of owning them. Congrats on your purchase, and now, you can start considering what you want to do next!

A: Jesus, yes it will Sir. No issues as it will be an easy drop in swap.

A: yes it fits with no problems