[plinker]

Must you remove gas block or barrel to install free-float rails or 4-rail systems?

 

[Joeywhat]

yes...except there are a few free floats that are installed much like a "regular" forearm, I can't remember if Midwest Industries or Daniel defense makes them...maybe both.

Typically, though...yes, you do.

 

[fishngrits]

Some, yes. MI, Troy, and Daniel Defense all make free floats that do not require you to remove the FSB. A one-piece rail will require you to remove the FSB.

 

[sourpatch45]

if its a one piece then yes if its a two piece then probably not