I may be wrong but I think it is a 105 recoilless rifle and not a howitzer. Different guys.

At one time, the -130s used the 20mm gatling, 2 40mm Bofors and the 105 howitzer. They were trying a new 23mm gun which apparently didn't work out.

My first combat sortie was in an old AC-119G, call sign Shadow, out of Phan Rang. We went down to III Corps and worked a fire base under attack. It carried some of the first night vision goggles and as I remember 3 7.62mini guns. We went bingo to Phan Rang, bingo to Phan Thiet, and finally were bingo to Tan Son Nhut. We had to leave but before we left, the aircraft commander put all 3 guns on high rate and in a minute or two we were on our way to Saigon.

When we landed, we learned the fire base had been over-run.

Later when I was sent to the boonies we watched one night an AC-47 and some guy on the ground get into a p*ssing contest. Green tracers going up. Red tracers coming down. After about 5 minutes, no more green tracers going up. But the ACs were not operated without cost.

On the ramp at Bien Hoa was a burned out Spooky. There were huge gouges up the left side of the fuselage and fire damage on the wing and number one engine. Seems an OV-10 driver working the night strike pulled off the target and went up the side of the AC- with his right prop and he went through the AC's #1 engine. No survivors on the OV-10.