dboys ak74 barrel threads
 

i have a dboys aks74 that has 24mm barrel threads. the box said it comes with a 14mm ccw thread, and maybe a convertor for 24mm is already jammed on there, but it seems like it connects to the front sight and i really dont want to take that off.

so 1 : is there actually 14mm thread under the 24mm threads and how can i easily get to it without damaging the convertor.

2: if its not, where can i find a conversion to 14mm?