If you got offended by my shitposting, lol. lmao.
Notifications stay off because I don't play chess with pigeons. The fact that you want to argue about a shitpost with a stranger on the internet named "Dookieman" is all I need to know your opinion isn't worth hearing.
Downvotes are delicious trophies; I've seen what you people like. Keep them coming.
Not the grip, the receiver. Serializing the grip wouldn't make any sense. Sometimes the receiver includes the grip, sometimes it doesn't, it depends on the firearm.
Either way, it's basically the "frame" or "chassis" of the firearm. It doesn't make sense to serialize any other portion because you could just swap that part out and have an ostensibly different firearm.