Originally Posted by
HansTheHobbit
The non chrome lined barrel has more accuracy potential, with a heavy emphasis on the word potential. BUT, in the real world, with non match grade ammo, you're probably not going to notice a difference between the two. And I'm guessing the barrel on the expanse is probably just in general not a high a quality as the one in their mil-spec offerings. JMHO, I don't know for sure. They may very well be the exact same barrels, with the expanse just not being chrome lined, in which case it would probably have a slight edge.
I would definitely go with the OEM1 if it were me. I wouldn't touch that expanse thing. The savings aren't worth the lack of features. Non chrome lined barrels are for stainless precision rifles. All CMV barrels should be either nitrided or chrome lined. It's the difference between a 10k and 20k round service life, not to mention that corrosion is an issue. I had an untreated "in the white" CMV barrel on my Kimber and I couldn't keep that POS from rusting. No matter how much oil I put on it it would rust. Everytime I cleaned it I would have to scrub off rust with hoppes and steel wool. Never again.