Got myself an Imbel upper but it has an inch pattern gas block that doesn't line up with rear sights correctly. So I'm left with the following options from cheapest to most labor intensive

>Get inch rear sight
>Get complete Inch lower
>Remove barrel assembly completely and replace with a Metric
(I really don't want to interact with boomer know it all smiths and pay them 500 to somehow fuck it up anyway). And before someone says FAL assembly is idiot proof. I'm not going out and buying all the tools and jigs etc to work on 1 gun. Last option is pull the inch barrel to sell, replace with an imbel assembly and hope it lines up correctly without needing real work done