RT California / FOB-2 CCC Kontum

RT California and the 60mm French “knee” mortar.
According to legendary SOG 1-0 Joe Walker, they used the second version of the French tube with an M1 baseplate. This model had a mechanical firing device at the base which afforded controlled and timed shots.
The sling was simply a wide cargo strap tied to the tube; the bipod and anything else was stripped away.
Rounds were modified by removing all charges except the base charge; the stabilizing body was also removed making the rounds shorter and more compact and easier to carry.
Walker designated one of his Yards to be the mortar man and assigned him an assistant; both still carried their individual CAR-15s, and additional mortar rounds were divided among the rest of the team.
During contact and where the terrain favored it, California would come up on-line in a modified immediate-action drill with CAR-15s, RPGs, RPD machineguns, and grenades to buy time for the 60 crew to make ready. Every man fired a set number of magazines or rockets making this action very choreographed. As all this happened, the 60 crew would open up with about 10 rounds in either indirect (traditional) fire, or from the hip, as Joe and several others demonstrate in the pics.
All this violence typically occurred within a few hundred feet separating the team from massing NVA. Using these tactics, 12–15 dudes could easily force several companies of NVA — and possibly more — to scatter and seriously wonder what the fuck they just bumped into.