Re: AR ff tube sling stud
The easiest way is to simply use a sling swivel stud with lock nut, which requires you to drill a hole in the forend. Holding the locknut on the underside can be a pain, but this is the simplest method. However, if you are going to go to the trouble of drilling, you might as well tap the hole and use a standard threaded sling swivel stud. You'll need a 10-32 tap and #21 drill bit, as well as a swivel stud. Tapping aluminum is very simple, just remember to use cutting oil. I just got finished doing one the other day, and it took less than five minutes. Just clean the threaded hole out real well, degrease the area, and add a little blue Loc Tite and you'll be in business.
One thing to note, though, is locating the proper area on the forend to mount the stud. Its easy to mount it off center, which makes leveling a standard bipod a pain. Also, one more thing to remember, is if you ever remove the forend and barrel nut, there is a chance the stud may not end up in the proper position (and may be off by a few degrees or even more).
