HELP! Length of AR15 Rifle-length Handguard

[XXXXX]

Hey all,

I'm working on a project. Could someone measure (to 1/8th inch accuracy) the length of their rifle-length handguard? Thanks!

Or just as good if someone can provide a site that carries the dimensions/schematics. I can't seem to find one.

 

[Power Pill]

12 inches or 30.5cm

 

[Armedsask]

A rifle length free float hand guard will cover half of the gas block on an AR180B.