Hey guys. I am new to modifying ARs. What do I need to know to change my front site (gas block) to a low profile style? I have the removable carry handle so there is a rear rail for optics but the front post interferes.
Also what do I need to know in order to buy an after market front hand guard. Looking for a tube style.
Also what do I need to know in order to buy an after market front hand guard. Looking for a tube style.


















































