I believe it is the ‘far side of the moon’. The moon is tidally locked to the earth so we only ever see one face frome here. But it does receive light regularly as it orbits the earth.

Yes. You can buy handguns for a couple of hundred dollars. For a few thousand you are able to buy much larger, more capable weapons like modern assault rifles or designated marksman rifles/sniper rifles. You could buy a small arsenal for 40k.