First one I downloaded from nexus was the cross ruger mk4 one and a half years ago. Even influenced my choice of my first personal handgun. Ended up getting a ruger mk4 22/45. But back on topic, the mk18 mod with alot of addons that give me the purple texture glitch, more modern day weapon mods, some night vision bundle mod that I dont even remember the name of, kill tips and sounds, SOE expansions pack, some random dalek pack, and other mods that I cant even remember the names for but take up 10 GB including the mods I listed. Yeah I aint like the hardcore people who have over 300 mods and a beastly fucking PC, my system is only slightly more powerful then a XBOX series X. New vegas has much less mods, I only modded Vegas so the health system is more realistic. For real my brain is shit when it comes to remembering this stuff, and I just got off fallout 4 5 minutes ago from when Im typing this.