I've heard its quite a performing gun straight out of the box. But my question is how easy is it to source out parts in case if something happens and/or upgrade options. From what I can tell right now, there are no retailers carrying any replacement or upgrade parts for KJ/TK M4 GBBR.
"Hey I'm the first one to say its a great country but its a straaaaange culture. This is a place where gun store owners are given a list of stolen credit cards but not a list of CRIMINALS and MANIACS. And now they're thinking of banning toy guns...AND THEY'RE GONNA KEEP THE F**KING REAL ONES!"
-George Carlin 1937 - 2008 (RIP buddy)