Pistol Length Quad Rail

[gp816]

I've been looking for a 4"-4.5" quad rail and have had a hard time finding good descriptions on whether or not some of them need smithing. I know free float tubes usually do but several of the quad rails I've seen are been described as free float rails. And the attachment to the upper receiver looks a little different than the carbine length rails.

Has anyone used pistol length rails? And how difficult it was to attach it to the upper?

[c_bass16]

I've never seen any rail that needed smithing to attach. At the very MOST, you will need a barrel nut wrench. That's the only special tool I've ever seen needed to replace the forend with a free float rail.

[gp816]

Thanks. I've never installed a new rail or tube to an AR so I was just going off of what I'd seen people say in their reviews of different rails. I found the one I want anyway and it looks supper simple to attach.