I need iron sights - I'm probably going to set the front post at the end of the barrel giving me more room for a guard and a low profile gasblock - 20 inches and over half is all guard to 20 inches and only five inches of barrel exposed - hmm, now I need to know the weights!
This is probably the hardest thing about building an AR - too many options.
This is probably the hardest thing about building an AR - too many options.