Make lemonade outta lemons. I buy and sell constantly, so I've learned that it's best to find the silver lining. After you shoot the 223/556? Then what? I think it's cool to have a 6.8, but that's me. I haven't ever shot a 6.8, so consider yourself a bit lucky.Rude, no. Not to me, but I'm a dumb redneck. I gave $750. Rock river lower, and obviously a DPMS upper. Quad rail with rubber covers. One cheap mag.
And you have the option of just trading uppers and avoiding all the FFL mess.Have you checked the invoice, did they put on the invoice its 6.8 or does the invoice say its 5.56, and does the invoice say its a parts rifle (as in made up of parts from different rifles)? Go back and read the Gun-Broker sales page for that rifle unless they have already deleted it. They may have shipped you the wrong rifle, its happened before. Be sure to print off every thing you can before they have a chance to delete it. I think at worst they will have to give you your money back, if they can't find you the rifle you payed for. If they advertised a Rock River 5.56, then make them find you a Rock River 5.56 not a Rock River/DPMS 6.8 upper.
Either 6.5 or 6.8 is a necked down 7.62x39
They were pleasant on the phone when I paid for the auction. And their feedback was good. I'm sure there is a good explanation for their not answering. But it is frustrating, and makes you wonder.
I have a sport upper I'd trade you for that 6.8 upper. It's only had 80 rounds through it!And to think, if I'd have bought the M&P sport here in town I could be shooting it now.
Meh, who needs those? I bought my Sport because they DON'T.I didn't buy the sport because it doesn't have the F/A, and dust cover. I'm hoping to find a Rock river upper so itis the complete package I thought I was buying.