Yes, just about any competent gunsmith can safely and properly drill and tap any H&R/NEF 20 gauge for a scope rail. Many smiths are not ready or willing to take on the precise and painstaking proper and safe drilling and tapping of the 12 gauge barrels for scope rails. My gunsmith here on Cape Cod does do it and has done both my Tracker II 12 gauge and my 24" 12 gauge with screw in chokes to use both as a deer and turkey gun with either a Red Dot (now mounted and GREAT) or a nice shotgun scope. I would highly recomend him for that work on either your 12 or 20 gauge shotguns (or any gauge) or any other work needed. Others here have used him with great success and satisfaction and the turn around time is good unless he is involved in some promised work. He builds custom .45's and does a lot of custom shotgun modifications, including adding screw in chokes, backboring, and relieving forcing cones among other modifications. I believe Huntennut was one of those that had his 12 gauge drilled and tapped and a scope rail added. My gunsmiths Name is Ed Gagnon of Centerville, Mass and if you need more info I can get it for you or just give him a call. I would suggest you don't call on Sunday, he is a good christian guy and is tied up most of the day. He is really a great gunsmith, reasonable rates, top notch work and timely in his jobs. If you call tell him I said hello, I have to get by his shop soon to say hello and have my .280 H&R Ultra barrel recrowned....<><.... :grin: