I have had one of these for about 8 months and have put at least 1,000 rounds of various levels of quality through it from cheap steel case to Federal Match Grade. It has been ABSOLUTELY FLAWLESS. No FT Feed, No FT Fire, No FT Eject. EVER! I can not say that about another AR belonging to a friend of mine that jammed constantly and was very clean and well cared for by a LEO. I replaced the magpul handguard with a free floating one and added an Eotech 512 HWS. I run the BGC a little wet as you should with a DGI AR. This was the 1st firearm I have ever owned and have had very little previous shooting experience. (Yeah... and my father in-law used to own a gun shop and has a private 35' pistol range). Last week I was shooting quarter sized groups at 50 yards from bench rest. The 512 reticle center dot is at best 2-3 MOA. I highly recommend this rifle as probably the best AR in its price range and above.
Because of my experience with this rifle I purchased a Sig P239, also FLAWLESS with at least 1,200 rnds through it, and have become a Sig customer for life.