This item replaces a mil-spec endplate and castle nut, the FX-9 uses a mil-spec endplate and castle nut, so yes it should work.
Unfortunately, it is not a QD attachment point. There is a QD point on the bottom of the unit, but the hole on the rear is not a QD point.
Mark H.
Yes, this will work with any length tube.
You can not add a QD endplate, but the Law Tactical AR Folding Stock Adapter has a build in QD sling attachment point.
The image for the OpticsPlanet Exclusive Law Tactical AR Folding Stock Adapter in FDE is an accurate representation of the color. Email us at Techsales@opticsplanet.com for further assistance.
The OpticsPlanet Exclusive Law Tactical AR Folding Stock Adapter will work with the JP Silent Captured Spring system. You will either need the JP Silent Captured Spring system specific for the OpticsPlanet Exclusive Law Tactical AR Folding Stock Adapter or the JP Silent Captured Spring system adapter. We currently do not have the adapter or the specific model JP Silent Captured Spring for the OpticsPlanet Exclusive Law Tactical AR Folding Stock Adapter.
Unfortunately it will not work as great on a left handed receiver as it will on a right handed receiver.
I would recommend contacting LWRC for that matter to be sure.
There are users who have been able to install the LAW Tactical folder to AR9 frame lower receivers.
Yes, you can.