Mid Length Gas Piston System With Adams Arms 1 piece bolt carrier, Plastic handguards and handguard cap.

The Adams Arms Gas Piston System is an end user installed after-market product for Mil-Spec AR's.  It will fit on any AR barrel with a .750" or 3/4" diameter at the shoulder where the front sight base sits. The Rifle version will work on barrel lengths from 16" to 20" that has an existing rifle gas system.

We recommend Midwest Industries or Daniel Defense Free Float Handguards for Best Operation.

We will install for you for a nominal fee.
 

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

Rifle Gas Piston System With Adams Arms 1 piece bolt carrier, Plastic handguards and handguard cap.

The Adams Arms Gas Piston System is an end user installed after-market product for Mil-Spec AR's.  It will fit on any AR barrel with a .750" or 3/4" diameter at the shoulder where the front sight base sits. The Rifle version will work on barrel lengths from 18" to 24" that has an existing rifle gas system.

We recommend Midwest Industries or Daniel Defense Free Float Handguards for Best Operation.

We will install for you for a nominal fee.
 

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

This is our custom built AR-15 Flat top Upper Assembly with Adams Arms Gas Piston. This is the "cadillac" upper we call the SuperNova 204. 20 inch Bead Blasted Lilja Stainless Steel Barrel chambered in 204 Ruger 1-12 Twist! Daniel Defense Lite Rail 12 Inch Forearm Rail. Mil-spec upper receiver with M4 Feedramps and Lasered T-Markings with Totally Free Floated Barrel with Daniel Defense Free Float Hand-guard. We double check head-space and test fire after assembly. This barrel will stabilize all 204 bullert upto 32 grains and most 40 grain bullets. Lilja barrels are the among the Best in the Business!

DOES include an Adams Arms carrier. 

Tactical charging handle makes loading with a scope easier.

Absolutely no modifications required to lower. Uses the same mags as any 223/5.56. 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, 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 is extremely strong and comfortable. Comes with three rail covers to protect your hands. 

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
Lilja Stainless Steel 1 in 12" twist 20” Hand lapped barrel with target crown
Daniel Defense Rifle Length Free Float forearm
Adams Arms carrier machined one piece with operating Lug - with bolt

Feel free to ask all the question you have. We take the time to answer them all! We have the best customer service bar none!

This item is in stock unless stated otherwise. If this is what you are looking for except you wish for a item or two to be different, then email or call us! We are custom builders, we will guide you though the process, we will advise you on what works and what does not. No question is stupid! (Except the one that isn't asked!)

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 Lilja Stainless Steel Barrel chambered in .223 Wylde 1-8 Twist! Daniel Defense Lite Rail 9.5 Inch Mid Rail. Mil-spec Upper receiver. We double check head-space and test fire after assembly. This barrel will stabilize all .223 or 5.56 bullets. Lilja barrels are the among the Best in the Business!

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. Designed with "skis" on the back to eliminate any wear you may experience on the extension tube.

Tactical charging handle makes loading with a scope easier.

Absolutely no modifications required to lower. Uses the same mags as any 223/5.56. 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. 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. The Daniel Defense Free Float Lite Rail extends under the gas piston block for a truly custom look and feel. Comes with three ladder type rail covers to protect your hands. Barrel has a Yankee Hill Recoil Compensator for reduced muzzle rise. 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
Lilja Stainless Steel 1 in 8" twist 16” Hand lapped barrel and Bead Blasted
Yankee Hill Tactical Compensator
Daniel Defense 9.5 FSP Free Float forearm
Milspec bolt

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

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 Lothar German-made Stainless Steel Barrel chambered in .223 Wylde 1-8 Twist! Hand Guard is a Daniel Defense Lite Rail 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. Lothar Walther barrels are Select Match Grade 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 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.

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

Daniel Defense 12 inch Lite-rail Free Float Forearm with Ladder 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!