They look good. And just a precursor though, and it means no harm, but the textures for that look like real images, so just make sure you have the rights to re-distribute them if you yourself did not take the pictures or create the texture. I'm not saying you did, but I see your very new to this forum so I'm attempting to help you avoid any future snags which could possibly cost you your account.
With that said lets move on:
The texturing could be a little more seamless. Looking at the last image of the "blockade" the dark line that runs almost dead center, takes a drop when it wraps around the edge.
Also the top seems to be "squished" version of the texture in whole. To get it not to pixilate as bad, try making the UV's for the top in better proportion to the front face.
Those models overall shapes look good and well proportioned. A little more work on the mapping would make the blockade a class "A" quality release.
Best
EDIT: Changed "these" to only reflect the blockade as the PDA's mapping looks fine.
Loc