This product is intended for use with an AR15, the charging handle for an AR10 is longer.
Here is a list of AR15 parts that can be used on an AR10 (from the AR-10 FAQ):
Pistol grip
Ejector/Safety spring
Safety detent
Buttstock screw (A2)
Buttstock Assembly (A2)
Buttstock spacer
Detent spring
Detent (2 per rifle)
Bolt stop pin
Bolt stop plunger
Bolt stop spring
Mag catch button
Mag catch spring
Safety selector
Rifle receiver extension
Disconnector
Disconnector spring
Standard Trigger
Trigger spring
Hammer
Hammer spring
Hammer and trigger pin
Trigger guard pin
Trigger guard assembly (on some rifles - others have built in trigger guards)
Buffer detent
Buffer detent spring
Mark H.