I have an AR chambered in 6.5 Grendel built with what I think are some of the strongest most reliable parts. It has a 22" stainless Criterion barrel with a VG6 Epsilon 6.5 muzzle brake and a Geissele super gas block with a black melanite rifle length gas tube and a Geissele MK8 15" modular rail. It is in Ballistic Advantage enhanced upper and lower just like Aero M4E1 because they are Ballistic was purchased by Aero a few years ago and started offering BA enhanced receivers. Geissele ambidextrous charging handle Seekins oversized bolt catch Geissele SSA-E trigger. It has a Luth-AR rifle stock that is adjustable for comb and length and has a Hogue pistol grip. Just built the exact same rifle in 6mm ARC so I don't really need this anymore. I don't have 50 rounds through this thing yet I feel like I build faster than I can even break them in. Any questions call or text 224-402-4433 I'm in Baxter the scope is a Crimson Trace Series 2 5x25x56 34 mm tube FFP MOA held on with a ADM Recon total package scope and all is $1700.00