After testing bit more I think the Sokol 545 is probably the best option for Standard mode and Cursed I-II (if you have the patience to get it from the box). Build Code: L04-2R4V5-9Q1DQ-51

UPDATED List of ALL known BO7 Zombies Dark Ops challenges (21/27)! Do you have any other? 🔮 Anathema: Eliminate 1 million zombies. Armed to the Teeth: Have 3 Pack-A-Punched Level III Legendary Rarity Weapons equipped with Ammo Mods and 8 Perks active. Social Distancing: Reach Round 20 without taking any damage. Another Round?: Reach Round 100. Invincible: Survive to Round 50 without getting downed. Harbinger of Doom: Kill 100 Zombies with a single Scorestreak. Box Addict: Buy 30 Weapons from the Mystery Box in a single match. Showboat: Complete the Ashes of the Damned Main Quest at Round 100 or more. Hard Mode: Complete the Ashes of the Damned Main Quest with Blood Vials, Dragon, and Bus Relics active. Lucidity: Complete the Tank Dempsey side quest on Ashes of the Damned. Coundown: Kill an Elite Zombie by launching it with a jump pad. The One: Reach Round 999. Action Hero: Shoot and Kill 100 Zombies without reloading. Boss Rush: Defeat the Ashes of The Damned Boss fight in 5 minutes or less. Ingenuity: Reach Round 50 with the Dragon Wings and Lawyer's Pen Relics equipped. Serious Monkey Business: Defeat the Papaback in Hardcore (Dead Ops Arcade 4). The Usual, Please: Drink Juggernog 20 times in a single match. Ready For Publishing: Fully Research all Augments for every item. New Main: Kill 1000 Zombies with each of the 8 Dedicated Crew Operators. Echoes: Complete the Nikolai Belinski side quest on Astra Malorum. Astronomical: Complete the Astra Malorum Main Quest with the Spider Fang, Civil Protector Head, and Golden Spork Relics active.