Sure you can. You'll need the correct A2 butt stock parts to do it. I know you'll need a new buffer tube, spacer... maybe a spring and buffer too? I'm not experienced with A2 butt stocks.
You will need a buttstock wrench to unscrew the castle nut on your current stock setup. Then you will need a new buffer tube, spacer, rifle buffer, rifle length spring, the A2 buttstock itself, and screw.
Yes you can. I put an A1 stock on mine as its almost 1" shorter than A2 stock
You'll need
A1/A2 Stock, with butt plate (trap door if applicable)
Rifle buffer tube
Rifle buffer
Rifle buffer spring
A2 stock spacer (not used with a1 stock)
A1/a2 buffer tube screw ( get right screw for stock..they are different lenghts)
Yes, it will work well as others have said. Remember the spacer for the A2 stock, you'll need it. It is not used for the shorter A1 stock. Otherwise the rifle receiver extension, buffer and spring are the same for the A1 or A2.