I bought this gun a few weeks ago and it finally got here today. I wanted a 6.8 spc, but everyone has been sold out for a while, so I had to improvise. The gun started as a $900 Rock River LAR15 flat top 5.56mm. From there I had a $550 PRI 6.8 SPC Barrel and bolt installed. I also had a $400 Daniel Defense rail, $40 Daniel Defense rail panels, $140 Magpul CTR stock, and $80 magpul MAID grip installed. The grip is pretty cool, you can hide two rounds inside it. I also bought a scope mount and today I installed an extra scope I had already. I plan on getting a NCSTAR tactical scope sometime soon, as well as a magpul trigger guard.
I took the gun out and shot it today. It feels much stronger than the 5.56 AR15's. I put 20 rounds through it without incident. As soon as Barrett gets more of their 6.8 SPC ammo back in stock I plan on buying 300 rounds.

Here's a few pics. Let me know what you think!!!















Here's a little comparison between a .270 win (6.8x64.5 ) and a 6.8 SPC (6.8x43). The SPC has a much smaller case, but uses a newer type or propellant which makes higher muzzle velocities a possibility in a smaller case.