Originally Posted by
everready73
Not sure what caliber you are thinking, but if .556 I would strongly recommend 10.5 it higher barrel length. 11.5 is what I like personally. Anything less than 10.5 is risky from a reliability stand point and their is a huge disadvantage ballistically. If 300 BO or 9mm you can go shorter
A Sionics or BCM 11.5 upper is a good start. Build out a quality lower with brace of your choice .Gearhead Tailhook, SB, and KAK are all decent options depending on your preference