Time for a Change of Gears
New guns on the "Toy" military attack boat
Reworking the boat’s weapons and other deck components.
First, the comically-oversized “water cannon” (just a .50 cal that they toy manufacturer repainted, it still had the ammo belt hanging out of the receiver) was removed from the bow mount.
Bought a pack of 1/72 (20mm) .50 cals. Two of these were mounted on a scrap piece of unused side skirt for a T-54 tank. These were then magnet-mounted onto the bow mount so they could still swivel.
Now I have four leftover .50 cals. That’s just no good, so I built two more gun mounts on the roof of the pilot house, one port bow, one starboard bow. “Pole” mounts cut from unused gun barrels of T-55AMs.
Extra pieces for the plating cut from unused planking of 1/56 German Opel Blitz trucks. Guns based in gray and dark-washed in darker gray / black.
Again, this was a toy bought from Sea World for $10 almost two years ago, noticed it was almost exactly 1/72 in scale (measuring the doors and windows against 20mm figures) so just trying to make a fun table top piece out of it.
Boat as she stands now with her new weapons. I also have 20mm guns coming ... I hope to mount a big twin mount on the stern soon,
Front .50s. On magnets so they turn great! 
Pilot House guns. Plating made from matte board, old Opel Blitz planking. Pintle mounts made from spare tank guns from other kits. .50 cals mail-ordered, primed and dark-washed.
The gun posts on the roof came out great.