I was one of the first to get the CMP 1903/A3's 3 years ago.. I got a REALLY nice Remintgon with original barrel... it is a fantastic shooter.. I have won a lot of Axis/Allied bolt gun matches with it.. unfortunately it has a bad neck in the chamber.... I have been searching for a correct or close to correct 6-43 barrel.... Well low and behold.. one of the guys I shoot with, brought me 4 A3 barrels still in the wrap from when he bought them from the DCM back in the early 60's for $1 each.. and guess what? A 6-43 4 groove RA barrel!!!!!! WOOOOOOOHOOOOOOOO!!!! and the best news of all.. he gave me all 4 barrels!!!!