Timney makes a great aftermarket trigger for the Remington model 700,that will fit your Remington model 722 rifle.
You will not likely find a Remington stock. I put my 722 in a Bell and Carlson stock and I love it.
BLue Book of Gun Values
100-400 USD
Accordig to what I've read it is a collecters gun
1 in 16"
100-400 USD depending on condition.
Around $595.00
See related links for date code stamp information on the Remington Society of America.
A Remington model 722 chambered in 222 Rem.caliber will bring between 550-650 dollars in the condition that you describe on today,s market.I own 2 model 722 rifles and will not sell either one.They shoot wonderfully,have a great trigger,and fit me like a glove.
1948 to 1962
Check Remington Society of America here for date: http://remingtonsociety.com/rsa/questions/barrelcodes