Your USMC Hog looks pretty good. Good job overall.
Here are a few pointers to make it better and more accurate.
First, a few things Dragon got wrong. They missed the boat on the rear tow pintle. It should be a tow pintle, not a block with a hole. Not much to do except replace it with a pintle from something else.
They also messed up the Bustle Rack Extension (BRE). The type in the kit was not used by the USMC, but by the US Army's 3rd ID, 2 BDE. They were constructed in Kuwait for PrePo vehicles stored there and drawn by 3ID. The USMC BRE is a folding type that was later adopted by the Army as well. It can be found in the later Dragon M1A2 SEP kit, Academy's M1A1 USMC 2003 kit, and by AM PE companies. If you add plastic water or fuel cans in racks on both ends, it will look closer to the USMC type.
USMC Folding BRE
Next, the center caps on the roadwheels should be black. They are actually clear plastic with gear oil inside. This allows a quick visual check of the level of the oil. The best way to represent them is with gloss black and the center bolt the color of the hull, sand in this case.
On the stowage, the spare road wheels should be turned around. They are secured to the grunt rails using a spare center guide tooth.
The ammo cans should still be green, with sand holders. They are replaceble ammo cans in holders.
Lastly, the water and MRE boxes on the front part of the turret need to be removed. They would not stay in place without straps and they would block the vision ports of the crew in those positions.
A good job overall. A few tweaks and it will be great.
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