Originally Posted By SGT69:
Anyone have experience with the Green Mountain AR-15 barrels? I have built several lowers but I'm looking to build my first upper and have had trouble finding a decent economy barrel. I'm not looking to build a tack driver but to assemble a basic AR shooter using non-exotic parts. The Green Mountain barrels seem to have a respectable reputation but my research also shows a few detractors. I'm seeking some first hand experience from AR15.com members and contributors. Most of the recent threads did not report much on performance or overall quality.
I've found a supplier with the Green Mountain GM-M4 16" 5.56mm NATO 1:8 Twist, with extension, chrome lined bore and chamber, 41V50 vanadium steel, uses a .750 gas block for $139.95.
I have never tried a GM AR barrel, but I have used their AK barrels before. Their AK barrels are the nicest and most accurate of the US-made ones that I have owned. I have read reviews about the GM AR barrels before, and all provided positive feedback. For such a low price, you really don't have much to lose by trying one out.