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Command Arms M4S1 Handguard & Rail System for AR15/M16 Carbines
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Most Helpful Positive Review Great look, fit and function...and one myth!
Nothing that looks this good is available for ARs with delta ring hand guards. It is virtually impervious to heat (but doesn't have metal heat shields). I have two lightweight builds that wear them. The whole assembly weighs less than half a pound. It feels great in your hand. But there is no optional aluminum top rail that runs the length to the upper receiver. CAA does offer the TRM3 polymer rail cover, but that is for a conventional M4 hand guard. It will resemble the M4s1, but it doesn't fit on one. The aluminum rail? It doesn't exist! Check their web site, call Customer Service....
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Replacement

by Meangene, from MI, United States Written on January 1, 2018
I replaced the stock hand guard on a duty patrol rock river that I purchased from my department. The m4s1 is lighter and looks more cleaned up. Not as bulky. The stock quad rail was too big. This rail worked just as I had hoped.
Would recommend: Yes
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Very futuristic look

by KEITH, from MO, United States Written on December 14, 2017
This makes the ar look futuristic, fun, and it feels good to hold. It does have one problem if you have a have a windham ar they have a sling loop under the gas block and the bottom rail attachments don't sit well on it but other than that it is great.
Would recommend: Yes
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