Originally Posted by
turnburglar
A few quick takeaway's from a Mike Pannone article;
AR's rely heavily on Springs and Lube. Make sure the buffer, mag and extractor springs are all in tip top shape. If I didnt buy a BCM BCG, I put the BCM extractor enhancement kit in the BCG. I only run Pmags or GI and if a mag has spring or feedlip issues it gets crushed and thrown in the trash. Use a quality buffer spring and a heavier buffer. I prefer H2.
For inspection purposes make sure the BCG can stand on the bolt face without retracting. This test ensures that your gas rings are tight enough. After a simple gas ring check all you need is a thin coating of lube. AR's run better wet.