Youtube user Northern Guy posted a video "Kodiak Defence WK180C 375 round update" given his impressions on the rifle after putting in a temporary O-ring to fix an issue where he had to manually feed the rifle. He did a followup video , "WK180C BCM EXTRACTOR SPRING UPGRADE", where he demonstrated the installation of a BCM spring to permanently fix the feed issue, and gave his further impressions along with some range video of the rifle in action. He bought the rifle 2nd hand, so he did not have the spare parts kit provide by Kodiak. Despite the warranty not being transferable, Kodiak is sending him a copy of the parts kit with a new extractor spring; Northern Guy just didn't want to wait for it Thanks for the great videos, Northern Guy!