Installing the Daniel Defense RIS II M4AI FSP

[johnpuga1982]

Out of curiosity have installed one onto a carbine that was already assembled? If so, I would like to know your secret because it usually takes about that long to remove the FSB and barrel nut.

No secret, the lite rail was installed on a rifle I built piece by piece as funds were available. I had the FSB installed through ADCO. I do recall prior to having a front sight bench block, it was a hassle to take the FSB off.

The RIS II was also installed on a rifle I built piece by piece as funds became available, except this time I got a barrel with a lower profile gas block.

[skijunkie55]

Why did I spend an extra $15 on this little wrench when it already came in the box?

damn you online descriptions which don't include a parts list...

Oh well. Gonna start on this after work.

[Zane1844]

Why did I spend an extra $15 on this little wrench when it already came in the box?

damn you online descriptions which don't include a parts list...

Oh well. Gonna start on this after work.

Same happened to me...Tough I lucked out cause the OmegaX came with a different barrel nut wrench than I expected, now I have the extra one for my LITE rail.

For me, your particular rail may be different, installing both LITE Rail and Omega X took a while only because the allen screws only let you have quarter turns.

[markm]

Why did I spend an extra $15 on this little wrench when it already came in the box?

Strange... I'm pretty sure I bought my DD little silver on Amazon. don't remember them coming with the wrench in the past.

The cheapo has worked fine for me for several installs.

[johnpuga1982]

My "lite rail" didn't come with a wrench, but the "RIS II" did. Always nice to have an extra.

[cobravenom39]

My "lite rail" didn't come with a wrench, but the "RIS II" did. Always nice to have an extra.

Neckropost.

Is it possible to install this with a pinned flash hider? Unsure I if the FSB needs to be completely removed or just slide down the barrel.

[johnpuga1982]

Neckropost.

Is it possible to install this with a pinned flash hider? Unsure I if the FSB needs to be completely removed or just slide down the barrel.

Daniel Defense uses a proprietary locking/barrel nut system. I'm gonna say the the barrel nut may clear the flash hider, but will not clear the FSB. I did a quick YouTube search and you can see the installation here:

https://www.youtube.com/watch?v=QoW-62i6jl4

To get a better idea I would look at some YouTube install videos. I found this video of a Lite Rail installation, however the Lite Rail is wider than the RIS II. I have two rifles, one with the Lite Rail and one with the RIS II, both use the same barrel nut and locking system.

https://www.youtube.com/watch?v=uunQxU4e6EY

[G.B.]

I've installed a few DD handguards with the wrench they provided without any problems. It is a very close tolerance so holding the wrench with one hand and the torque wrench with the other to keep things from moving. I didn't have the DD wrench once and used a bcm kmr wrench. The biggest thing is making sure the wrench stays completely straight. Sometimes it is hard to get it straight because of the tight fit. You might have to tap it with something to get all the tabs in the barrel nut.

[Singlestack Wonder]

Here's a great tool for removing/installing FSB taper pins with ease:

http://www.xringproducts.com/X_Ring_Products_EEIO.php

[Iraqgunz]

Yes, it will need to come off.

Neckropost.

Is it possible to install this with a pinned flash hider? Unsure I if the FSB needs to be completely removed or just slide down the barrel.