Anyone know the weight of Troy's Extreme 11" rail?

Looking for a good lightweight FF tube with add on rail sections such as Troy’s 11" Extreme rail. Can’t find the weights listed at all for these rails. Also, does anyone have much experience with these rails or would you recommend something else? Will be used on a 14.5" upper with shaved FSB.

Here ya go…

https://www.m4carbine.net/showthread.php?t=37912&highlight=troy+extreme+weight&page=2

Thanks! I appreciate it.