I have a preban Colt 20" (barrel marked C MP 5.56 NATO 1/9 HBAR) barreled flat-top upper in excellent condition for sale complete with Colt bolt, bolt carrier, charging handle, and front pivot pin. This is the "large hole" model Colt. A2 flash suppressor, no bayonet lug, sling swivel has been removed. Comes with a new set of black Bushmaster A2 handguards. No trades please. $475 including shipping; postal money order only.
This barrel stabilizes 75 gr Hornady TAP and 77 gr SMK (Black Hills Mk 262 Mod 1) bullets fine.
Please e-mail me at email@example.com with any questions or if you wish to see a picture.
EDIT: the Colt HBAR upper & BCA is now SOLD pending receipt of funds.