The GM Command type is known from 0080: War in the Pocket. Developed at the end of the One Year War, it had a Space variant and a Ground/Colony variant, with gravity in mind and armed with less powerful weapons in order not to breach colony walls. While easily a match for the latest Zaku II mobile suits, a number of these were destroyed by the Zeon Kämpfer.
Bandai released the red Space version as a P-Bandai exclusive a little before this version came out.
Aesthetics:
While not entirely color accurate, most of the color separation is here. It is a largely anime accurate version, though I do wish they had made yellow Federation symbols for the shield and chest - These are available on the included sticker decal sheet.
The kit also has a foil sticker sheet with camera stickers, though I found them to be somewhat small and ill fitting.
The inside of the face is highly detailed and I used a metal gundam marker to paint it all as well as the inside of the top head camera, so the details show through the transparent green visor, to good effect.
I like the cream/off white plastic and the chocolate brown fits well on top. The interior of the verniers are all grey and should've been red. Bit of a cheap move, considering there are red parts included.
The sticker decals are okay to use on the white plastic, but the borders will be obvious on the darker colors.
Mechanics:
This is a 2.0 kit through and through, most likely based on the GM Sniper II earlier that year (which is likely a development on the original GM 2.0), since it does not have a core block, which means that it can bend over quite well and also tilt side to side.
Besides an opening cockpit hatch it has pistons on the arms, legs and feet.
The shoulders feel weak/fragile due to the old internal piston design. While it does give it a HUGE and impressive range of shoulder movement, it also makes it feel somewhat sketchy. The hands are finger-swap style, so the thumb and palm stay on the arm permanently.
Equipment:
1 Bullpup Machine Gun - One color with a green foil camera sticker, has a detachable magazine and two extra magazines stored on the...
1 Shield - Has a handle and attaches on either lower arm, it can also equip the back skirt beam saber holder
2 "flashlight" Beam Saber Hilts + 2 light pink Beam Saber Effect Parts
9 swap-style fingers - 1 right hand trigger finger for the bullpup, 2 fists, 2 holding fingers for shield and beam sabers, 2 expressive spread open fingers and 2 unused R/L trigger fingers for other weapons
1 Base adapter
That's all there is, however there are 50 individual spare parts, most of which are tiny components.
Conclusion:
The GM is a classic mobile suit with a ton of variations and so Bandai can keep pumping them out without having to redesign them from the bottom. That being said, there are other internal parts than the (more intricate) Sniper II that this is based on. It spans nearly a decade worth of model kits and is an amalgamation of many other suits made before it, plus its own runner, which makes it feel old-fashioned for a 2017 model kit (same year the ZZ Ver.Ka was released).
Its simplicity is its greatest feature, making it a relatively cheap base model for customization, painting and scribing and without that limiting core block feature that the 2.0 GM has.