Although this may not be what you’re asking AvengeR but none the less may be worth checking out and that’s forgetting about the compressor, brad nailer and stapler and look into the Pasload nailers out there. They run on fuel cells and there’s no need for a compressor and cord.
If he may be using the compressor for other things as well then maybe it’s not something for right now, but if its likely to be used just for nailing then I’ll go with the Pasloads.
Although I mainly use a framing nailer for my work, I used to carry around a compressor and nailer for years but not any more, after I found these things I now have 2 Framing nailers and 1 finishing nailer and I would never go back to a compressor… they are a dream come true.
Cordless Framing Nailers
Paslode Cordless 30° Framing Nailer
Cordless Finish Nailers
Paslode Cordless 16 Gauge Straight Finish Nailer
Paslode Cordless 16 Gauge Angled Finish Nailer
Paslode Cordless 18 Gauge Finish Nailer
Cordless Staplers
Paslode Cordless 16 Gauge Utility Stapler