The TKA-412 Motor Gun Boat represents the latest model and a heavily modified version of the G-5 Motor Torpedo Boat. Its main differences from other G-5s lie in its inclusion of two 12.7 mm DShK heavy machine guns, instead of the usual one, and an additional rocket launcher capable of firing M-8 rockets. Unlike other G-5 models, it no longer carries torpedoes; its primary purpose now is serving as a motor gun boat, primarily utilized for firepower support during WW2 landing operations.

This boat was introduced during Update 1.97 "Viking Fury" as a reward for the Victory Day event and returned as one of the random rewards in Battle Pass: Season XVI, "Skilled Marksman". Gameplay-wise, it remains quite similar to other G-5 models in the game. Its superior speed compared to other boats at its BR allows for quick capture of strategic points. Additionally, armed with two 12.7 mm DShK heavy machine guns, it can swiftly handle most boats at its BR. However, the standout feature of the TKA-412 is its M-8 rockets. Capable of carrying 48 of these rockets, it has the potential to obliterate any boats it successfully hits.