Special Exchange

Some NPCs offer unlimited exchange of certain special items. It's not marked in your PDA.
== Akim ==
Akim is selling Locks for 10000RU and Wrenched.
== Vityok the Raven ==
Vityok the Raven is offering random artifacts for rare guns and guns upgraded by Lanky. Weapon condition must be better than 50%; its rarity determines the value of the artifact he gives in return. 
While generally a terrible trade of unique weapons for mediocre artifacts, Personal sawed-off BM-16 can be obtained by exchanging it at Raven (you are limited to 30 trades, so spend your trades wisely) for just two controller hands. Then you can give the gun back to Raven for a Tier 5 artifact, with Plasma Caterpillar, Great Grandma's Beads, and Electric Porcupine being especially desirable in the early game. Alternatively, you can obtain the gun in Devotee's cyclic for the extra eggs you have left from the Crow's eggs quest.
* A good strategy to obtain controller hands early on is to borrow the stash contents in Perimeter defence, replenishing it later during the Controller hunt.
Later on in the game, you may have a large surplus of upgraded weapons found in stashes. These can be traded to Raven for artifacts which will be more valuable when sold, or cooked into higher tier artifacts.
Bug warning: it's theoretically possible to give him AA-12 "Camo" obtained during "Black Angel". Do not do that, as it's a unique gun that will be required in the subsequent quest.
Eligible rare and unique guns
* Tier 1: Fort-15, Gewehr 43, OTs-14 "Groza" (NATO), HK MP5A3 "9x18", Saiga-12K "Sniper", TT Z-10, TT ".45", The honorary "Vintorez", Walther "9x18"
* Tier 2: AA-12 "Camo", AN-94 "Sniper", AN-94 "Assault", AKS-74U "Special forces", Sayga 308-1 "Custom", APS, FN FNX-40 "Tactical", Crossbow, FN F2000 "Old", Enfield L85A2 "Balanced", Enfield L85A2 "Sniper", Beretta M93R,Mauser C-96 M712 Schnellfeuer, HK MP5SD, Winchester 1300 "Chaser"
* Tier 3: Gunslinger's AKMS, Strelok's AK, Fang's AK-74, APB "7.62x25", OTs-14-2 "Groza-5.45", Mauser K-98, Luger P08, Mosin's rifle ver. 1891/30 "Sniper", Fenrir's Cheytac M200, Mauser C-96, Schmeiiser MKb.42H, HK MP5A3 "7.62x25", HK MP5A3 ".357 Magnum", HK MP5SD A3 "5.7x28", OTs-27-2 "9x19", RPKM, RPK-201, SIG SG-550 "Sniper", Rocket-propelled infantry flamethrower RPO-A, SIG SG-552 "Commando", SKS "Custom", SVU-A, AS "Val" "Tactical", AS "Val" PSO-3, General Voronin's VSS "Vintorez", Walther WA 2000 "Anomaly", Sawed-off Remington 870 "Wingmaster"
* Tier 4: TOZ-34 "Hunter", AR-F "Sniper", Bibik's AKMS, AWP "Antikiller", Benelli M3 "Tactical", Norman's Crossbow, Ghost's Gauss, Desert Eagle "Long", Big Ben, Flamethrower "Screw's System", FN F2000 "Executioner", Groza "Sniper", HK 417 "Sniper", Luger "Parabellum", Hook's Mossberg, RPG-7, Cardan's Saiga-12K, Franchi SPAS-12 "Hunter", SVD "Long-Range", SVD "Tiger", SVD "Eagle-Owl", SVT-40, VSSK "Vykhlop - Antiterror", Zastava M91
* Tier 5: VSS "Golden eagle", AKS-74 "Improved", Chemist's AK, Kalter's VMK, Calter's VMK "+", Barrett M95 "Whisper", Personal sawed-off BM-16, FN F2000 "Paratrooper", Crudface's Gaussgun, "Hostel", "KORD" Machinegun, "KORD" Tank Machinegun, Maschinengewehr 42, "Poltergeist" flamethrower, Strikeback, 6G30 M209, Vepr-12, Vepr-12 "Sniper"
Eligible upgraded guns
Name 	Accuracy	Chambering	Recoil	Weight	Acc + weight	Ch + weight	Rec + weight	 	 			 	 			 	 			 	 			 	 			 	 			 	 			 	 			 		 						 	 			 	 			 	 			 	 			 	 	 		 	 	 		 	 	 		 	 	 		 	 			 	 			 	 	 		 	 	 		 	 							 				 				 	 	 		 	 	 		 				 				 	 	 			 	 		 	 	 		 	 	 		 					 			 	 	 		 	 	 		 				 				 	 			 	 			 				 				 	 	 		 	 	 		 	 	 		 	 	 		 	 	 		 	 	 		 				 				 				 				 	 	 		 	 	 		 				 				 				 				 	 	 		 	 	 		 	 	 		 	 	 		 	 	 		 	 	 		 				 				 				 				 				 				 				 				 				 				 	 	 		 	 	 		 	 	 		 	 	 		 	 	 		 	 	 		 				 				 	 			 	 			 				 				 				 				 	 	 		 	 	 		 				 				 	 	 		 	 	 		 				 				 				 				 				 			
AN-94 "Abakan"	 	3 	4 	4 	 	 	5 	AN-94 "Sniper"	3			3	4			AEK-971	4			4	5			AEK-972	4			4	5			AEK-973	4			4	5			AK-15		5						AK	4			4	5			AK-74M	3			3	4			AKS-74U	3	4		3	5	5		AK-74	4	4		4	5	5		AKM	3			3	4			AK-74M "Cobra"	3	3		3	4	4		Needle Gun	3							Barrett М95				4				PP-19 "Bison"	3	3		3	5	5		Sawed-off BM-16				2				FA MAS G2	4	4			5	5		FN F2000	4	4		4	5	5		HK G3A3					4			HK G36	4	4		4	5	4		OTs-14-4 "Groza"				4				HK 417 "Sniper"	4			4	5			Kriss Super V				3				Enfield L85A2	3	4		3	5	5		LR-300ML	4	4		4	5	5		Colt M16A4	3	4		3	5	5		Mosin's rifle ver. 1891/30 "Sniper"				3				Benelli M4 SUPER 90				3				Colt M4 CQBR	3	3		3	5	5		M60				4				M79 Grenade Launcher				3				HK MP5K	3	3		3	5	5		HK MP5A4	3	3		3	5	5		HK MP7A1	3	3		3	5	5		FN P90				3				PKM (6P6)				4				PPSh-41				4				Protecta				4				Saiga-12K ""Tactic"				4				Scorpion Vz.82	2	2		2	5	5		SIG SG-551 LB	3	4		4	5	5		SIG SG-550	3	4		4	5	5		Franchi SPAS-12				3				Knight's SR-25	3			4	5			SVD				3				SVU				3				Tavor CTAR-21	4	4		4	5	5		TOZ-34				3				IMI UZI	3	4		3	5	5		AS "Val"				3				VSS "Vintorez"				4				Winchester 1300				4			
Reward artifact pool
* Tier 1: Stone Flower, Gravi, Stone Blood, Meat Chunk, Soul, Sparkler, Flash, Thorn, Slug, Droplets, Fireball
* Tier 2: Crystal, Moonlight, Thorn, Crystal Thorn, Sea Urchin, Mica, Night Star, Goldfish
* Tier 3: Mama's Beads, Pellicle, Battery, Dummy, Spring, Kolobok
* Tier 4: Drops of the Soul, Tears Of the Electra, Grandma's Beads, Fiery Dummy, Porcupine, Steel Kolobok, Hide
* Tier 5: Plasma Caterpillar, Tears of Fire, Great Grandma's Beads, Electric Porcupine, Fiery Soul, Scale, Bright Dummy, Titanium Kolobok
Category:OP-2.2 Overviews
== Informant ==
For 40 PDAs, Informant will give you a random stash, equivalent to any other random stash you can get from searching NPC bodies; the rank (Rookie to Master) is also random.
For 20 PDAs, he will give you a grenade or a random pack of ammo from this pool:
== Kholod ==
Kholod has a pretty standard exchange which is located in a separate dialogue for some reason. It's unlimited.
Offer 	Requirement	 	 	 	 	 	 	 	 	 	
F-1 grenade ×3	Gravi 	F-1 grenade ×3	Meat Chunk	F-1 grenade ×3	Wrenched ×2	First aid kit ×4	Slug	First aid kit ×4	Sparkler ×2	First aid kit ×4	Stone Blood ×2
== Kalmyk ==
Kalmyk will give you Kalmyk's ointment for Vodka ×3 or Cigarettes Lucky Strike ×3.
== Lukash ==
After The obtained trophy, Lukash will exchange Monolithian ID tag ×10 for two boxes of random sniper ammo from the following pool:
Show/Hide list
* 7.62x51mm NATO ×20
* 7.62x51mm NATO AP ×20
* 7.62x54mm 7N14 SN ×10
* 7.62x54mm B-30 AP ×10
* 7.92x57mm ×20
* 7.92x57mm AP ×20
* .338 LM FMJ ×10
* LM Partition .338 ×10
* 9.3x64mm Brenneke ×10
* 9.3x64mm 7N33 9CH ×10
* 12.7x55mm STs-130 IA ×10
* 12.7x55mm STs-130 IP ×10
* 12.7x108mm AP ×10
== Sakharov ==
After Vasiliev's PDA, Sakharov will exchange either:
* Teleport to Yantar
* Teleport to Cordon
* Teleport to Bar
for 20000RU and a Battery artifact.
== Vasily ==
After finding the blueprints in Collector's stash X-8, Vasily can craft you anomalous underbarrel grenades in packs of six, assuming you completed Tools for Vasily. Regardless of type, each pack takes seven hours to complete and will require:
* Black Energy ×6
* 23x76 "Shrapnel-25" ×6
* VOG-25 charge ×6
* 48,000 RU
You'll also need the following artifacts, depending on the type:
Type 	Artifacts 	 	 	 	 	 	
VOG-25 charge "Vortex"	Wrenched ×6, Gravi ×6	VOG-25 charge "Burner"	Droplets ×6, Fireball ×6	VOG-25 charge "Electra"	Sparkler ×6, Flash ×6	VOG-25 charge "Snowflake"	Stone Blood ×6, Meat Chunk ×6
Since these grenades are expensive, rare, and the range is too enormous for them to be safely used in most situations, the only real use for them is the OP-2.2 quests#Wave of Mutants questline. It makes sense to make about 100-120 of VOG-25 charge "Electra" for that questline in advance (which require at least 17-20 days to craft).