Delta Force Descends: I Become a Havoc Arms Dealer

Transmigration + a tech golden finger + an infinite tech tree + a satisfying story about getting stronger. What was that? I didn't catch it. But you can go tell my Havoc legion first. The skies belong to Havoc. What? You modified that gun for 100,000, and it's steadier than my fully modded M14 that cost a million? That's because I'm good at controlling recoil. It's all skill. What level is your armor? I watched you get shot for ages, but you were totally fine. The other guy must've missed because his aim was awful. Or maybe I'm just good at dodging, hahaha! What level ammo are you using? When you shoot the other guy, he goes down like he's not wearing armor at all. That's because I'm good with a gun. Every shot's a headshot. Just lucky, I guess. How are you running so fast? You're even faster than me in the “Gilded Rose” set. You aren't cheating, are you? You think this is still a game where you can cheat? This is all thanks to my hard work and sweat. Actually, all of this is because the protagonist's golden finger is the “Havoc Tech System,” which lets him modify guns and equipment. Experience the crushing power of technology from the future. Become the biggest arms supplier and restore Havoc to its former glory.