They love well designed, high quality and precision manufactured tools, but they're not big fans of the typical armorer's wrench.  Of all the functions they are tasked to perform, they usually end up using 2 or 3 of them, which isn't a problem in itself, except the quality and origin of these wrenches can be questionable.  So it is not their intention to create yet another multi-function armorer's wrench.  High quality, US made and dedicated tools for the AR15/M16 system are more in line with their design philosophy, and fit their portfolio much better.

CBW (Combination Barrel nut Wrench) is the second product in FCD's high quality, dedicated tools product line.  CBW has a standard AR15/M16 barrel nut  wrench on one end, and an A2 rifle length receiver extension wrench on the other.  CBW is designed to be used with a torque wrench, and has a torque wrench drive socket in the center.

Beautifully billet machined from 4140, heat treated and black oxide coated, it is a hefty tool at 7.6 oz.  For comparison, the run of the mill armorer's wrench weighs in at 1.8 lbs, half of it consists of the long handle.  Since CBW is designed to be used with a torque wrench, it does away with the unwieldy handle, which may remove CBW's ability to be dual used as a melee weapon, but it is far more nimble for the tasks it's designed to handle.  The proper torque value is conveniently engraved on the barrel nut wrench side for easy reference.

CBW, like JMW (Joint Muzzle device Wrench) and JCW (Joint Castle nut Wrench) requires a torque wrench with 1/2" drive.

Please NOTE: CBW is incompatible with Armalite AR10 barrel nuts.