As the armament of the D-3-class torpedo boats—consisting of only two DShK machine guns and torpedoes—became obsolete and it was impossible to obtain more modern Soviet weapons, the boats were rearmed with Lend-Lease guns. This process began with the TK-126, which, in mid-September 1944, received two twin turrets equipped with Browning heavy machine guns and one 20-mm Oerlikon cannon. The TK-126 belongs to the 1941 TKA P-19 series. It served in both the northern part of the country and the Baltic Sea, ending its service in 1945.

The TK-126 was introduced in Update 2.55 "Ninth Wave". Compared to the D-3, the TK-126's machine gun armament doubled thanks to twin turrets equipped with American machine guns. The TK-126 also received a 20 mm cannon in the stern; however, using it requires exposing the side of the boat. Otherwise, it's similar to the D-3: a boat with decent speed, but low survivability and a poorly armored wooden hull.