I just bought a Carbon-15 upper that fits on my AR-15 Lower! It is very cool and works great with about 500 rounds through it with no malfuntions I am ordering a 9.5" version to add to my M16. My upper that I installed on my Colt ar-15 fit perfectly and required no mod's I paid 500 from POI and the gun weighs 6.0 lbs and feels (balances better than with the 20" colt upper.) Groups are about 1.5" @ a 100 but I belive they will do better as I was shooting from my truck bed with a light cross wind. It has a vented carbon foregrip and a fluted ss. barrel with the peep sights like the R97S very cool. any one else have one or tried the 9.5" NFA upper??

Jack