Post shots from multiple angles plus wireframes and your texture maps.
Your grip material looks off. The pistol grip is most often made out of rubber (from the factory at least), yours at the moment looks to be a shiny plastic.
The trigger guard's edges are super sharp, clean that up a bit by adding some more roundness. Do you have a normal map in this area from your high poly?
Also do not render with a black background. I often use the ambient sky or a cool blue/gray, something other than black.
Made a couple of updates that you suggested, rounded the trigger guard and the top of the grip. Took down the roughness on the rubber handle and changed the render settings a little.
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Changed the noise a little on the metal and pulled down the roughness slightly.
Post shots from multiple angles plus wireframes and your texture maps.
Your grip material looks off. The pistol grip is most often made out of rubber (from the factory at least), yours at the moment looks to be a shiny plastic.
The trigger guard's edges are super sharp, clean that up a bit by adding some more roundness. Do you have a normal map in this area from your high poly?
Also do not render with a black background. I often use the ambient sky or a cool blue/gray, something other than black.