What is the story behind your handle "m1903a3"?
I purchased an A3 back in 1961 for $10 through the NRA/DCM.
Took me over 30 years to complete the sporterizing process.
As recommended by the NRA, replaced the stamped trigger housing and two groove barrel which I now understand is no longer recommended.
Got a rough Bishop stock, bought a sling and had the rough barrel machined and blued in South Africa while working down there. The gunsmith said it had the smoothest action he’d ever seen.
My grandson fitted sights and scope, finished off the stock and had metal and stock engraved. Fired it once.
Now my grandson in Eastern Oregon totes a great looking arm.