Rogerborg

Exactly that, which is why there's little point in over-thinking it. I haven't heard anything bad about the Delta Armory brand, but neither do I put a premium on brand names - looking at you, G&G. Personally I'd go with a FLEX and run it on 11.1V. But if you're happy with the value proposition of the Delta Armory, and if you get a good example, then it's the right choice for you.

Yup, you're at about 0.8J which is pretty poor (unless you're a Tokyo Marui true believer). You can throw in a stronger spring, although you're putting more stress on the components than by improving the air seal. If you are going to just up-spring, and if that 0.8J and M90 are accurate, and you have a chrono available, I'd go to an M105 or M110. If you come out hot, you can cut a coil off, or just heat and flatten a coil with a gas flame.

Ahoy and welcome. It's got all the good stuff, and decent polymer bodies are fine. Alternatives would be the Double Eagle M9XX series, or any of the Specna Arms with a fire control system. The FLEX range offer phenomenal value for money, although the motor in the Delta Armory (sic) may be better. There's no standard for what "high torque" means, which is why I buy aftermarket. You're really spoiled for choice in M4s at the moment, and pretty much anything offered by Patrol Base - not you, NUPROL - will work. Avoid the very cheapest CYMA M5xx guns (because of the toytown plastic), pick whatever you like the look of, and pull the trigger.

Sounds irrational, we should switch to them as I hear there's no downside.

Then it should be extremely trivial to remind us why we don't we shoot each other with steel BBs.

Sure, if you know what you're after, they're fine. Especially when you factor in free postage, and that if you leave it in your basket for 24 hours, you're likely to receive a discount offer.

Why don't we shoot each other with steel BBs?

It's not generally accepted yet, but I'm fine with it. Above about 0.4g you have to mix in so much metal and minerals that it becomes hard to argue that we're slinging "plastic".

Might as well get the chargeback started while you wait.

Airsofters, though.

Yup, there are no standards in airsoft, only a series of copies of copies. A millimetre sanded off here, or shimmed in there, can be necessary.

"Please buy our failing part-time business with a patchy reputation" is a tempting pitch, but I reckon I'll pass.

Noice!

Time, or distance? I mean, the limiting factor is doubtless the amount of road.

It doesn't burn out, it just bleeps-out and refuses to play at too high a current draw. I've experienced it, someone else here has too (I forget who), but that's with 11.1V and a Big Dragon M160 brushed motor (meaty but not particularly efficient) in a 1.8J DMR build. Worst case, you already have 7.4V so can fall back to that if you do experience it on a game day. I wouldn't be put off going to 11.1V just because of the stock X-ASR. The fact that it's there means you can replace it an actual fire control mosfet like a Warfet or Perun AB++ (or insert other mosfet of choice) with a bit of soldering.