This is our custom built AR-15 M4 Flat top Upper Assembly with Adams Arms Gas Piston. This is the "cadillac" upper we call the SuperNova. 16 inch Lothar Walther Stainless Steel Barrel chambered in .223 Wylde 1-8 Twist! Total Free Floated Barrel with Daniel Defense Lite Rail 9.5 Inch Mid Rail. Yankee Hill Mil-spec Upper receiver with Daniel Defense Free Float Hand-guard. We double check head-space and test fire after assembly. This barrel will stabilize all .223 or 5.56 bullets. Lothar Walther barrels are Match Grade capable of under 1 inch MOA. DOES include Les Baer Com-spec. bolt and carrier and Mil-spec 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.

Yankee Hill Mil spec Receiver: 7075, T6 aluminum, flattop rail, accepts Weaver-style rings and your tactical accessories. 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 in 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. The Daniel Defense Free Float Lite 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.

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
Lothar Walther Stainless Steel 1 in 8" twist 20” barrel
Yankee Hill Tactical Flashhider

Daniel Defense Lite-rail Free Float forearm
Les Baer Com-spec carrier assembly with bolt

Milspec Charging Handle

Front Swivel

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

This is a new custom built AR-15 5.56 NATO upper with DPMS Stainless Steel Match grade barrel. This barrel has been blacken by DPMS. What you see is what you get! Yankee Hill upper receiver with Yankee Hill Diamond Vented Free Float Forearm. DPMS Match grade barrel in 1-8" twist. We double check headspace assembly. This barrel will stabilize all 223 or 5.56 NATO bullets from the lightest up to 85 grain. Our customers are reporting that upper assemblies using these barrels are consistently shooting around 1 moa! DOES NOT include bolt and carrier, or charging handle. Order these items separately under Accessories page.

Machined, 7075, T6 aluminum, upper receiver, with a 5" long flattop rail, accepts Picatinny-style rings and your tactical accessories. Finished with mil-spec, hard-coat, black anodizing for protection from scratches, mars, and abrasion. Includes case deflector, port cover, and forward assist.

 
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!

Yankee Hill Flattop Upper
DPMS 1 in 8" twist 18” Match grade Blackened Stainless Steel Barrel

Yankee Hill Serrated Flash HiderD

Yankee Hill 12" Diamond Vented Free-float Forearm

Single Rail Gas Block

Stainless Steel Gas Tube

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