From the HFC that I have they are durable slightly oversized hand guns. Most of my HFC are accurate, durable, and reliable guns. I don't think they are the quailty of a Western Arms, KSC, KWA or KWJ. But the HFC is a nice gun, I like their version of the P99 over the KWC's.
The gun you like looks like a modified Glock, S&W Sigma combination, I like HFC Metal version of the Glock 17 that comes with two barrels, another slide and a CO2 unit.