Foreign institutional investors (FIIs) were net buyers of Rs 349.30 crore on Friday, December 01, according to data released by Sebi today.While FIIs made gross purchases of Rs 1,872.30 crore, gross sales totalled Rs 1,523.10 crore.Mutual funds (MFs) were net buyers of Rs 304.33 crore on Friday. MFs made purchases of Rs 666.34 crore and sales of Rs 362.01 crore.