I think the problem with my normal map is the part of render to texture ...I will keep working on improving the diffuse map and making more normal maps, thank you all, you are helping me a lot :D
After reading your advice I have worked on getting some better normal maps, diffuse,spec...and ive taken some references to improve the appearance of the gun ( http://i530.photobucket.com/albums/dd346/drm2m/Model1851ColtNavyfullleftsideview00.jpg ) and this is the result: Stockwell, your tips and video that you posted…