Del-ton provides - Del-Ton Pre-Ban M4 Carbine Rifle Kit

Excellent value for the money. Zero issues out of two different del-ton kits purchased from here and directly from the manufacture. Stress tested with mud and gunk, still fired. I love this build kit for the money, i have seen zero problems and the upper comes assembled already. If you are a first time builder this is EXTREMELY easy to build. Provide your own lower and you will have a great rifle.