The 03 A3 I have is made or converted or what ever by NAT ORD,So.El monte, Ca. # 2609 , it has a R A( Rock Island Armory ? )barrel ,marked 7 -43. Now I'm not sure it is a two grove ,I will have to pass a patch through it to see. I see some markings on the bbl. that look like NM1A, don't remember seeing that before , not surprising ,because I haven't looked at this weapon in over ten years . The stock was repaired once and it was refitted poorly . I guess its my next project.