^Good info^
Unless you have a bunch of AR's that you clean constantly I don't see that thing getting much use.
A 15-22 magazine lightly secured in your bench vise makes a great tool for cleaning. Then throw an AR mag in there for the big brothers.
That same vise paired with barrel blocks makes handguard and muzzle device swaps possible for the 15-22. Throw in a Geissele reaction rod, punches, a torque wrench, and an armorer's wrench and you're building AR's.