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Would this rail fit on my 16 inch barrel AR15? — 3 Answers

by roger, from OR, United States Asked on October 11, 2018

Name Knight's Armament Free Float Rifle RAS Mk 12 Mod 1 with Three 11-Rib Panels (4.8)
$450.00 $427.50 Save $22.50
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A
Answered by Armando R., Gear Expert, from IL, United States, on March 19, 2019

This rail would fit any standard 16 inch upper receiver, but this handguard requires the removal of the existing gas system to have a proprietary barrel nut installed. Then the handguard would require a low profile gas block so the handguard can install over the gas system. This will NOT work with an AR that has a fixed front sight. This is a free float rail meant to be used with a low profile gas block.

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A
Answered by Andrew, member, from TN, United States, on December 06, 2018

If your 16” Barrel had a low profile gas block then yes either length of ras 2 rails would fit but if you have a A-frame front sight post then no it wouldn’t

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Answered by Sighter04, guest, from PA, United States, on November 16, 2018

No. You would need the 7 inch or 9 inch depending if your gas system is carbine or midlength.

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