I follow GTA for a while now, and a few years back I remember this post: https://www.gatewaytoairguns.org/GTA/index.php?topic=103233.0 Basically what I can see here is that Nick Nielsen (NSA) invented the Hybrid Slugs 4 years ago, I might be wrong. So I am confuse know, NSA?, RatSniper? or FX?