Welcome to the forum jsturbo! I used a free float M-Lok hand guard from Right to Bear on my 12 build. I liked it because it had a QD sling hole on the side.
Here is a link to the hand guard I used. I used a 9 but you could go longer but it has been gtg and easy to install.
https://www.righttobear.com/m-lok-free-f...lok-9-556/
Here is a link to the hand guard I used. I used a 9 but you could go longer but it has been gtg and easy to install.
https://www.righttobear.com/m-lok-free-f...lok-9-556/