Rare sawed-off gun

Dan wants you to speak to Vityok the Raven and buy a rare Remington 870 model for a sack of pot he gives you.
== Walkthrough ==
Go and speak to Raven. He says that he doesn't have the shotgun anymore, as a burer lifted it off his hands and threw it onto a metallic construction near [ two large reservoirs]. He gives you 10 Impulse grenades to kick it off the construction.
The best way to do this seems to climb one of the reservoirs and throw grenades to kick off the shotgun. Impulse grenades don't do any damage, they just push things, so don't worry about breaking the gun with them. Both shotgun location and the best place to do it are shown on the picture below.
After obtaining the gun in full condition, bring it to Dan. He says you can keep the gun as he already got a better one, and gives you a reward. He also gives intel on an Emerald Jellyfish that has appeared in the Forgotten Forest, either at the [ red barrels] or near the [ crashed helicopter] in the northeast.
== Notes ==
* Impulse grenades aren't used anywhere else in the game, so don't bother saving them. You can't push friendly NPCs out of the way with them either - it still counts as an attack, like with flash grenades. You can use them to push physical items, though.
* With sufficient parkour skills it's possible to make it to the top of the construction itself, but you likely need at least one jumping artifact.
== Bugs ==
* The quest can be softlocked by giving the gun to Hog for his chain quest instead of bringing it back to Dan.