If you want the Weapons Manufacturer achievement (craft a Lasgun) in Dune: Awakening, the short version is: you need the unique Black Market / Arhun K-28 lasgun schematic, and that schematic is primarily a Deep Desert drop (Imperial/Testing/Ecology stations) - but there are a few reliable alternatives and farming tips you should know to stop chasing ghosts and Dune Awakening Solari actually unlock the achievement. 

Where the schematic spawns

The Black Market (often listed as Arhun K-28 / Black Market K-28) schematic is a Deep Desert unique drop. Most community guides and loot trackers list the schematic as appearing in loot from the Imperial Testing / Ecology stations in the Deep Desert (grids like A1/A2 and specific testing stations such as No. 37 have been reported). These stations contain unique chests that have a small chance to drop the unique lasgun schematic when that schematic is on the Deep Desert loot rotation. 

Why RNG matters - and the loot rotation

The Deep Desert swaps which unique schematics appear in its loot tables on a weekly rotation. That means you might run the same station dozens of times and never see the lasgun schematic unless that week's loot table includes it. Several guides explicitly warn: the schematic is RNG-based and only available when it's on that week's table, so patience or timing (checking community loot tables) helps. If you don't get the schematic from a chest, expect to clear the zone and return after chest respawn or wait for the next rotation. 

Practical farming locations & tips

Deep Desert - Imperial Testing / Ecology stations: focus on the northern stations and the ecological/test labs (players commonly report A1/A2 grids and specific numbered testing stations). Clear the area, prioritize the unique chest(s) at the end of the encounter, and loot everything. 

Check the Exchange (Auction House): if chase-and-pray isn't your style, the player-driven Exchange often has either the schematic or a crafted lasgun for sale - prices vary by server and time. This is the fastest non-RNG route if you have solari. 

Contracts/Quests: some community posts note certain quests or turn-ins (e.g., handing in a Mark 6 Cutteray or completing a specific contract) can reward a lasgun or lead to one; this can be a more reliable method if it's available to you that day. Check quest rewards before discarding them. 

Crafting requirements once you have the schematic

Once you obtain the unique schematic, you must research/unlock it and craft the lasgun at an Advanced Weapons Fabricator. Crafting requires substantial tier-6 materials (Plastanium/Plasteel composites, mechanical parts, ray amplifiers, spice, a large water cost, etc.), so budget your resources or plan a farming run for crafting mats. The Steam/guide entries list exact ingredient counts for the Black Market K-28. 

Final practical advice

Watch loot-rotation posts in community hubs (Discord, Reddit) so you hit the Deep Desert in a week the lasgun is available. 

Use the Exchange if you can spare solari - it's a huge time saver. 

Bring a group for faster clear speed and chest control in the Deep Desert (and watch for PvP zones when trading or clearing).

If you're stuck, check recent community threads or short video guides - creators often show exact chest locations and guaranteed ways to get the schematic that week. 

With a targeted Deep Desert run (or a smart buy on the Exchange) and buy Dune Awakening Solari the required materials saved up, you'll be able to research and craft the Black Market K-28, tick off Weapons Manufacturer, and finally wield your lasgun on Arrakis. Good luck - and watch the sands.