This is an ADCO assembled upper that I had put together last year. 14.5" 4150 chrome-lined M4 profile barrel (5.56 NATO 1/7") with correct non-F height FSB. A2X extended FH pinned and welded for 16" OAL. LAR A1/C7 upper with anodized extended feed-ramps. The upper has 20 rounds through it, zeroed and functions flawlessly.
Also included: M16 BCG, properly staked with HP-tested C158 bolt, charging handle, Colt "N" fiberlite stock, 6-hole skinny handguards (not sure if Colt) and an A2 grip. Everything is in excellent condition and won't disappoint.
This is a great upper and furniture kit, but it just lost its home.
$525 delivered. Paypal only.
Looks like this when assembled (not my image):