" So your saying a mini is supposed to fit in the pylon"
Yep, If you looked at the TACOM site I gave you the link to you would find this photo:
" border="0" />
As you can see the front part of the pod contains one M134, 6 barreled, electrically fired gatling gun. the rear of the pod contained 1,500 rounds of 7.62mm linkless ammo. Rate of fire for the M134 was variable between 2,000 and 4,000 rounds per minute. If I recall correctly, the M18 system was fired at the low end to conserve ammo. The hole on the side of the front part of the pod is for expended brass to be ejected.
Ray
Edit; Here's an even better shot of the gun pods with the guns exposed. this pic is from the 68th AHC website and shows a Cobra with two M18 systems being serviced. You can see the front part of the right pod on the ground and the left one standing next to the ship. By the way, this cobra probably belonged to the 334th Playboys.
" border="0" />