If you want to staple all day long, I can recommend Airco guns. Many furniture factories use them and parts are available freely. Use 10mm staples on fabrics and 12mm on webbings. No one uses Pirelli rubber webbing these days. (Too costly)Mostly Elastic and Jute. You must double the ends over on each web or else later on they will pull through or fray out. By the time you have used a hand stapler for a few hours and got blisters and sore hands you will wish you had spent the extra few $'s and gone pnuematic.

And seeing that you already have a compressor, you're halfway there. 80psi pressure and no more or else you will start to blow seals out of the gun and always put just a few drops of oil down the air intake at the start of each days work. I have used air guns for 35 years and with good maintenance (and dont use the top end of the guns for driving in staples or tacks which are sticking up, you will break the driver blade

) on average you will get a few years out of every gun when used properly in commercial situations.
Neil.