Assembly of VSSM "Vintorez"

After showing the schematic of the advanced weapon from Leshy's PDA to Docent, he says that Lanky will be able to create the VSSM "Vintorez" from it, provided you have the parts. You have to search stalkers' stashes as they often have upgrades for weapons. The information about the required parts is dropped onto your PDA as a note.
This quest is completely unmarked.
== Walkthrough ==
After accepting the quest, 20 parts required for the weapon spawn in random vanilla Shadow of Chernobyl and Clear Sky stashes, on the locations presented in the table below. You'll have to check all vanilla stashes/containers on those maps, until you find all 20 parts.
Additionally, you need one VSS "Vintorez", one AS "Val", and one "Aimpoint" Magnifier. These items also spawn in ordinary stashes, but you can obtain them in any other way (the magnifier can be bought from either Adrenaline or Owl).
After obtaining all required parts, talk to Lanky. He is so impressed that you were able to collect all of the parts that he'll give you a 10% discount, charging 90000RU for the work. After 23-24h (random) come back for the assembled gun.
=== Maps of the vanilla stashes ===
Here's a hopefully complete map: https://stalker-op22-cyclic-quest-wiki.ru/vssm_treasures
The maps below are largely correct, but a couple stashes are inaccurate.
Name 	Map	 		 		 		 		 		 		 		 		 		 	
Swamps	 	Cordon		Dump		Agroprom		Bar		Dark Valley		Wild Territory		Yantar		Army Warehouses		Radar		Central Pripyat	
== Notes ==
* You would need to search 304 stashes, with 20 stashes containing the necessary parts. Essentially, you have a 7% chance to find a stash that contains your parts. 
**Maps above are only 99% accurate, so if you're really stuck even after searching all stashes, you can use this addon to highlight the parts on your map. Install the addon, remember where the parts are, quit the game without saving, remove the addon. All credits for the addon go to "Boss" at AMK Forums.
* The VSSM "Vintorez" has a fixed 3x magnification scope with computerized targeting and mediocre accuracy offset by its functionally zero recoil as long as your burst is under 5 shots. Like the AEK rifles, It works well as a lightweight medium range gun to dispose of unarmored targets and mutants.
** The gun also suffers from extreme accuracy loss when not aiming down your sights.
== Bugs ==