JB Enterprise

Hey guys first post need some help, fairly new to ak variants, have had a 5.45 for 3 years now and decided to convert it. I was wanting to know if there is a frontsight/gasblock combination that is a direct press on fit with the current gas tube I see k var has two different ones I was wondering which one would fit. any thing would help, thanks very much. Justin Bowerman JB Enterprise 07 FFL in Central Ca.