My latest all Colt lightweight build.
Match Hbar lower
16.1" Colt lightweight barrel, I went with the 16" unit so I could get it approved on my form 6.
Colt CAR Stock
I switched the front post to the thin C7 and the rear aperture to the A2 ghost ring and the buffer to a H unit. Its a very handy package, I'll be putting it through its paces next weekend.