Nice write up. I've played airsoft for many years - gone through several Green Gas guns - the slide weight is always a lot lighter than the real thing. Also - in general, the trigger pulls are much lighter. Even with the weight of the mag in the gun - it's still just a bit different (balance-wise). Still a great training tool though!
He'll be driving 50k miles a year. What is the mileage component of that warranty?
According to Nissan's website I'm only seeing "Almost every Nissan – including yours - comes with a 3-year/36,000 mile limited warranty, and a 5-year limited powertrain warranty. For enhanced protection, Nissan also offers optional extended warranties."
https://www.nissanusa.com/owners/ownership/warranty.html