So last year I bought a stag model 6 varminter and as I use it it Find it way too heavy and slow to maneuver for my liking. could I have the barrel cut by my gun Smith and still retain The accuracy? The barrel is a stainless 24" 1/8 twist factory model 6 barrel. I'm thinking chop it down to 16 or 18" is it possible. Or am I better off selling the upper and buying a different upper?