I just got this rifle and do not like the short FF tube. Can the front site post be trimmed enough to accomodate a Troy battle rail? I see the have low and high profile, does it matter? I have never had a 308 AR before so not sure if it will work like a normal AR, and not sure what Troy means on the profiles? I am gonna have the work done elsewhere I just need to get the parts and would like to keep the pinned site and just trim it if possible? Thanks