This Mete SFx pro is optics and suppressor ready. The 5.76″ barrel is fluted and threaded. The slide is cut to reduce reciprocating weight and help with barrel cooling. The front sight has been upgraded to a fiber optic and the trigger to an enhanced aluminum flat shoe with 90 degree break. An extended mag release has been installed. I also replaced the thread protector with a silver one that matches the barrel for when you don’t want the comp. It comes with a compensator, the original box and tools, a magwell extension and 2 18rnd mags. I’ve probably put 2000 rounds through it and I don’t recall a single malfunction.
All together there are about $150 worth of upgrades. The stock SFX pro has an MSRP of $660 but you can find them for a bit under $600. The average used price that I’ve found is about $480. Adding 50% of the cost of the upgrades, I’d accept $550.