6.5 grendel round is more common than you think, it gets bought up fast around here, besides that it has a lot more kenetic energy than 5.56 and it fits the ar15 platform but $500 for a complete rifle sounds cheap, that means the pawn shop doesnt have much in it so I guess buy it at your own risk if you wanted to, I wouldn't though.. I bought mine a while back from sanders (just the upper) for like $450 the lower with the trigger and buffer is around $600 so really nothing special but it will drive nails at 400 the grip and other small bs stuff is just magpul which you can get reasonably priced, but he was right about it being tested for the police snipers, the lapua won out, even still you're not trying to snipe anyone I dont think, this is a medium to large game round and it does carry enough energy for its job, not sure about an engine block, I really doubt that but i haven't (and won't) test it. The new kid aka "trendy" round is the .224 valkyrie and it's great over long distances but it also lacks the same stopping power so.. smaller game? But vandal is right the trendy rounds do tend to give way to tried and true rounds like the .308 and if we ever do need to defend our liberties, you'll be fine with what you have stock of in my opinion, I wouldn't buy anything way to "out there" unless you just have the extra green to drop on the new ammo ( and good luck getting enough to make a difference lol)
