Hello everybody, thought i'd better check in as i might need you folks someday.Just got a 10-19 o3 barreled action that i would like to set up as an a3. I've ordered a boyds stock and also metal from numrich. The barrel is 21.75" so it may be shortened. The bore is a little dark but the lands and grooves are distinct. I'll get a picture and more info later. Thanks Johnny