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Q&A for Daniel Defense M4A1 FSP Rail Interface System RIS II — 15 Questions & 14 Answers

Name Daniel Defense M4A1 FSP Rail Interface System RIS II (5)
$538.00 $501.00 Save $37.00
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Q
Hutch, member, from WI, United States, asked on January 05, 2020

Does this include the barrel nut wrench?

Expert Answer
A
Answered by Armando R., Gear Expert, from IL, United States, on March 25, 2020

Unfortunately Daniel Defense does not list whether this handguard comes with the barrel nut wrench and we do not offer it on our website. You would need to source it directly from Daniel Defense.

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Q
Jay, member, from UT, United States, asked on January 24, 2023

Would this fit an S&W Volunteer AR10?

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on August 30, 2023

The Daniel Defense M4A1 FSP Rail Interface System RIS II will not fit the M&P10.

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Q
Hoolie, guest, from CA, United States, asked on November 30, 2022

Will this work with a S&w sport 2

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on December 02, 2022

To fit the Daniel Defense M4A1 FSP Rail Interface System RIS II to your M&P15 Sport II, you will need to remove your delta ring completely. You would then be able to install this handguard with the included barrel nut.

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Q
HonestGun, member, from MI, United States, asked on May 23, 2022

Will this fit my FosTech Stryker 300 blackout

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on June 03, 2022

The Daniel Defense M4A1 FSP Rail Interface System RIS II is designed to work with Mil-Spec AR15 upper receivers. The Daniel Defense M4A1 FSP Rail Interface System RIS II will work with a Fostech Stryker in .300 Blackout but I recommend using the handguard at the link below if your rifle does not have an A2 front sight gas block.
https://www.opticsplanet.com/daniel-defense-dd-m4-rail-rifle-length-15-inch-01-134-09186.html

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Q
HonestGun, member, from MI, United States, asked on May 23, 2022

Will this fit my FosTech Stryker 300 blackout

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on August 26, 2022

The Daniel Defense M4A1 FSP Rail Interface System RIS II is designed to be used with carbine length rifles with a Front Sight Gas Block. So it could be used with a Fostech Stryker if it has a carbine length gas system and FSB.

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Q
J.P. Margo, member, from NC, United States, asked on February 06, 2022

Will this fit a Sig 516?

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on May 24, 2023

The Daniel Defense M4A1 FSP Rail Interface System RIS II will not fit a Sig 516.

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Q
Rich, member, from TX, United States, asked on July 28, 2020

Will this fit stag arms left handed ar15 carbine 16.5 and dose it have to be changed to a low profile gas block

Expert Answer
A
Answered by Ben, Gear Expert, from UT, United States, on February 19, 2021

These rails are compatible with your standard AR-15 rifle and are made to be used around the A2 front sight post.

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Q
Morris Denkins, member, from NC, United States, asked on June 28, 2020

Will this rail on a 14.5 length barrel??

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A
Answered by Ben, Gear Expert, from UT, United States, on February 19, 2021

Yes, it will fit and function just fine.

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Q
Baby Bruce, guest, from OR, United States, asked on June 21, 2020

will this fit on an a2 fsp w a bayonet lug? i know the sling swivel needs to be removed but otherwise it should be good to go?

Expert Answer
A
Answered by Ben, Gear Expert, from UT, United States, on February 19, 2021

Yes, it should fit and function just fine.

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Q
MD20-20, member, from RI, United States, asked on April 28, 2020

Will this fit on a colt LE

Expert Answer
A
Answered by Ben, Gear Expert, from UT, United States, on February 19, 2021

These rails are compatible with your standard AR-15 rifle.

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