I have been looking at the low pro uppers at Midway USA. I have a RR lower to put it on.
1. How do it shoot?
2. Any problems with upper or bolt and carrier?
3. Color match to RR lower? will it be a bitch getting it on a RR lower?
4. 20 or 16! I can't decide
5. Will it really shoot 5.56. It says 223?