AUSTanker,
Your inquiry is complicated at best without seeing the photographs of the HMMWV you were in. First off with operations for SFOR, Sinai peacekeeping missions and combat operations in Afghanistan and Iraq, the US Army and Marine Corp found itself drastically short of basic armor Armament Carriers. I will explain the major HMMWV Armament Carriers/TOW Carriers in use at the time:
ARMAMENT CARRIERS
M1025- US Army standard armament carrier with basic armor (identifiable by ‘X’ pattern on the doors). These vehicles had a mount that could accommodate an MK 19 GMG, M2 .50 cal, M249 SAW, M60 or M240B.
M1026- US Army standard armament carrier that is the same as the M1025 but has a winch mounted on the front for self-recovery.
M1043- US Marine Corp version of the M1025. Obvious visible differences are taller air intake for engine and wading exhaust that extended up the driver side to the roof line.
M1044- US Marine Corp version of the M1026. Same features of the M1043.
Due to damage suffered by US HMMWV’s in Panama and Somalia, the DoD identified that the armor protection of the Armament carriers had to be improved. This led to the development of the M1109 Armament Carrier for the Army which saw very limited fielding and use in the Balkans region. While the interim M1109 was being introduced, the design for the M1114 HMMWV was being finalized with versions first going into service in roughly 2004.
TOW MISSILE CARRIERS
M966 TOW Carrier- US Army TOW Missile Carrier with basic armor (identifiable by ‘X’ pattern on the doors). Externally, if the TOW System wasn’t in place, the M1025/M1026 series was very hard to differentiate from the M966. The primary external difference was the turret rings. The M966 turret ring had an integral square holder for the missile guidance set. This square holder is absent from the M1025/M1026 turret ring.
The Marines used the M966 for a very short period of time before converting them to the M1045/M1046 TOW Missile Carrier (thus the Tamiya kit of the M1046). The primary difference between the US Army M966 and the US Marine M1045/M1046 was the up-armor package put on by the US Marines which is referred to as supplemental armor. The supplemental armor package is most readily identified visually by the ‘smooth’ armored doors as opposed to the ‘X’ pattern doors on the basic armor HMMWV’s.
The internal configuration of the TOW Carriers and the Armament Carriers were vastly different. The Armament Carriers primarily had storage brackets for the MG’s, ammo cans and water/fuel cans whereas the TOW Carriers had a rack under the hatchback that stored 6 TOW reloads. There were also storage brackets for the Missile Guidance Set, the TOW night sight and batteries to run the TOW system off of dismounted along with a few ammo can brackets. Keep in mind my explanation is simplified somewhat.
Now, with peacekeeping operations going on in several places, combat operations in Afghanistan and the invasion of Iraq getting ready to kick off, the US Army found itself drastically short of Armament Carriers (non-TOW)in 2002/early 2003. So, the Army took many M966 TOW Carriers and provided them with the ‘bearing sleeve’ (the tall post, maybe a foot and a half tall that you referenced in your original post) to accommodate the mounting of the various machine guns in the turret ring. To properly mount your MG’s, you would have required an MK 64 or MK 93 weapon mount. Those would have been in short supply as well. The Light Infantry Battalion that I’m in now actually received some of these M966’s that were pushed into ‘Armament Carrier’ service. These M966’s came from an MP unit that was using them as Armament Carriers. I have walk-around photos of it on my website here:
www.hmmwvinscale.com/.../album
So, primarily what was done to the converted M966’s internally is that they removed all of the TOW specific storage brackets except the racks for ammo cans and jerry cans. You will see in my photos that the TOW component stowage labels were still in place. Also, the mounting bracket on the exterior of the turret ring for the Missile Guidance Set was removed.
I would bet the vehicle you used was a converted M966 that still had the storage rack in it for the TOW reloads. The Army being short MK 64/MK 93 vehicle weapon mounts would explain why you had to improvise with your M249.
There are two HMMWV dedicated websites that could be of use to you. One is my website which is www.hmmwvinscale.com. Another gentleman by the name of Kuba runs http://www.humvee-models.com. Kuba's website is great and has much more information than mine. He has had it up longer and has help building it whereas my site is run by only me and I only add to it as time is available. Your challenge with his website is that it is based in Poland and is not in English.
Feel free to email me at minuteman1636@hotmail.com if you want. I would love to get copies of your photos for addition to my website and I can help you positively identify what type of HMMWV you were on. I also have a ton of spare parts and can possibly help you with parts needed for a kit conversion.
Let me know if I can help.
Best regards,
Brent Sauer (sgtsauer on Armorama)