I don't think you would lose much performance if you took the chokes out to .030 or .035, but screw ins installed after cutting the barrels to 29" would be my choice as long as I'm writing checks. I don't know if the stock is drilled, but drilling the stock would save a few ounces. Installing swivels would be my last defiant act. I have the itch to find another one now that we have discussed it. My Field Grade NID Mag Ten does have swivels, apparently factory installed.