Threw some Tamiya XF-66 light grey on the 3.7 cm gun.
I grabbed the wrong sized block to black prime, so next time I will use the larger block to display the gun on.
A side by side comparison.
I think I will try some black primer at least around the bolts on the 5.7 cm gun but not sure. I kinda like the green grey look but might have too prime as the locker will be a different material and color so it will look different.
Next up for 3.7 gun is to gloss coat, try some Tamiya panel liner around the details, flat coat and then some light dust weathering. I think I will also add a small track bracket to set the gun on.