This is our custom built AR-15 M4 Flat top Upper Assembly with Adams Arms Gas Piston. This is part of the "cadillac" upper series we call the SuperNova. 20 inch Criterion Stainless Steel Barrel chambered in .223 Wylde 1-8 Twist! Hand Guard is a Daniel Defense DDM4 12 Inch Rifle Length Rail. Mil-spec upper receiver with M4 Feedramps and Lasered T-Markings. We double check head-space and test fire after assembly. This barrel will stabilize all .223 or 5.56 bullets up to 77 grain. Barrels are capable of under 1 inch MOA. DOES include BCM/Vltor Gunfighter charging handle.

Absolutely no modifications required to lower. Will mate to any quality Mil-spec lower except some Colts with the Large diameter take-down pins. We do stock the adapter pins for these Colts.

Mil spec Receiver: 7075, T6 aluminum, flattop rail, M4 Feedramped, Laser T Marked.  Finished with mil-spec, hard-coat, black anodizing for protection from scratches, mars, and abrasion.

Adams Arms Gas piston system. We have tested several other gas piston systems and have settled on the Adams Arms for dependability and ease of cleaning. Has positions for full piston charge, reduced piston charge for suppressors and no piston charge for single shot firing. "Mellonite" Coated Carrier is single piece with Integral Action Rod Lug. The Daniel Defense DDM4 Rail extends under the gas piston block for a truly custom look and feel. Comes with three rail covers to protect your hands. Barrel has a Yankee Hill Serrated flash suppressor for reduced muzzle flash. This is one sweet silky smooth upper assembly! It is truly impressive.

One piece bolt carrier is made out of high grade stainless steel and treated with a proprietary meloniting process that gives it the same, if not better, hardness level and corrosion resistance of hard chrome. We've also designed them with "skis" on the back to eliminate any wear you may experience on the extension tube.

We are a FFL licensed manufacturer, but this upper can be shipped to an individual – no need to transfer through FFL. You are responsible to know the laws in your area!

Flattop upper with Forward Assist and Port Cover
Criterion Stainless Steel 1 in 8" twist 20” barrel
Yankee Hill Phantom Flashhider

Daniel Defense 12 inch DDM4 Free Float Forearm with Rail Covers
Milspec Bolt

Gunfighter Charging Handle Mod 4

Front Swivel is now QD LOW PROFILE - Note: Differs from Picture

Feel free to ask all the question you have. We take the time to answer them all!