Couple of bits from Toy-Fu arrived as a coda after going missing in the big packing exercise, the recent Crosshairs and a 2007 movie Spy Shot 6.
Speaking of cameras, new one. Image stabilisation, low light and the focus isn't broken on this one. It’s an LG G6 body (retail demo unit with no SIM hardware, 2017 model so they’re getting cleared out of storage and this was less than a sixteenth of what the handsets went for initially. It’s pretty easy to take the demo software off).
This is my take on giving Siege Crosshairs
bigger wheels. It's not intended to keep the wheels as out of sight as the https://m.youtube.com/watch?v=-i4QpFiJv4g
mod. It also doesn't involve glue, although I do destroy a couple of pieces of LEGO which purists will probably object to. The parts create a firm connection whilst still being easily removable. Recipe follows pics: https://imgur.com/a/TvN9yxf
The wheels are 22mm ones https://www.bricklink.com/v2/catalog/ca ... P=6118#T=C
that fit Technic pins and fit inside the vehicle rims, also taking old-school studs https://www.bricklink.com/v2/catalog/ca ... P=4073#T=C
that you can get in red or dark red to suit your palette preferences. Neither matches the Crosshairs deco perfectly so the choice depends on whether you want a slightly more vintage look, which is what I used.
The back axles are formed from a couple of these https://www.bricklink.com/v2/catalog/ca ... =61184#T=C
pins plus a couple of these https://www.bricklink.com/v2/catalog/ca ... =32002#T=C
(which you'll want another three of in a minute) backed with two of these https://www.bricklink.com/v2/catalog/ca ... =18654#T=C
or you can cut one of these https://www.bricklink.com/v2/catalog/ca ... =62462#T=C
The front axle is a https://www.bricklink.com/v2/catalog/ca ... =2714a#T=C
with the bigger end clipped off and another ¾ pin. I went for those pins because they're slightly extended on the short side but don't have friction on their long side, so they hold position well but also allow the wheels to roll.
Finally there are two more ¾ pins inside the leg panels ready to hold the back wheels in robot mode. You can either have the wheels hang off his legs or on the front grille when it becomes a backpack.
When transformed to robot mode the panels don't clip perfectly due to the axles and you could probably shave parts down to achieve that if you wanted to whilst still having the wheels clip firmly.
I have to say I like the lunar rover (mining vehicle?) effect, I can imagine that cannon/hammer weapon as a repurposed rock blasting tool. Never having had the original, I can't say the lack of Pinpointer as a Targetmaster companion bothers me.