I have the following Yankee Hill Machine parts for sale. All are in as-new condition (perfect finish, you can't distinguish them from new), assembled into an upper but never taken outside or fired:
YHM carbine-length lightweight free float 4-rail forend plus sling swivel stud - $80 SOLD YHM gas block and flip-up front sight, part # YHM-9395 - $65 SOLD YHM bipod adapter, part # YHM-638 - $20 SOLD
See Yankee Hill Machine's Web site
for pics and description.
Shipping included to lower 48 states. Email please. PayPal +3%. USPS Money Order only.
Thanks for looking.