SARCO may have what you are looking for.
Remember, that using inexpensive parts makes for an inexpensive 1911 and the parts may need fitting to work together.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)