what size forend is on the olympic arms mfr?

i bought one the other day and am wanting to replace the cheap forend with a magpul one
this pic is not mine but looks just like it
http://imgur.com/a/bGMCg

Benjamin2013-03-02T12:44:35Z

That looks like a carbine length (7") hand guard.

Nigel2013-03-04T15:04:43Z

That most definitely is a 7" carbine-length handguard.

Mr.3572013-03-02T18:39:00Z

If that is a 16" barrel, it almost looks like a pistol fore arm. Just guessing would be carbine.