Shiny, indeed. If each one gets a little better, it should be no p roblem for you to finish my resin casting for me... I was going to do it myself, but not after seeing that.
Seriously, PM me if you have any interest in doing another.
Grips are surprisingly easy... it's been covered by Robstyle before on the Hyperfirm gun tutorials, but it's basically streaks of browns/blacks/tans that get feathered/blended.
Very nice build-up - fantastic weathering. Although I must admit I absolutely HATE the guns from Firefly. It's turned me off on the entire show. *shrug* But that doesn't stop me from admiring a well-done prop.