Im looking to replace the front sight post on my bcm upper for a low profile gas block and a Samson evolution handguard. this is the most hassle free low profile gas block correct? Aside from cutting and shaping my stock front site base this would be a direct replacement for the taper pins correct? https://www.primaryarms.com/Troy_Low_Profile_Gas_Block_Pro_Grade_SS_p/sgas-2lp-00bt-00.htm Only part I need to order if so Wanna kill these ads? We can help!