Ar-15/m16 5.56 16 Basic Piston Upper Receivers.

Ready To Install To Make A Reliable, Clean Running Piston Rifle

Complete Base upper receiver assembly comes ready to install on mil-spec lower receiver to produce a reliable, positive-cycling gas piston gun. Adams Arms’ proven piston system doesn’t vent hot gases and burned powder into the bolt carrier and receiver, so the gun runs cooler, with less fouling and wear on the action, and easier maintenance. Short-stroke piston shaft eliminates concussive gas expansion in the upper receiver for less violent cycling, smoother feeding, and reduced felt recoil. The receiver is forged from 6061 T6 aluminum and features M4 feed ramp cuts and a 13-slot Picatinny-cut flattop rail. The adjustable gas block allows three levels of gas release: normal fire, firing with a suppressor attached, or a single round fired without cycling. Picatinny rail on top of gas block accepts a variety of clamp-on tactical sights. All models have melonite-lined barrels chambered for 5.56mm NATO, with an A2 flash hider and a black Melonite® finish for superb wear resistance and up to 60% more corrosion resistance than traditional phosphate coating. Carbine - 16" barrel and M4-style carbine handguard. Mid-length – 16" barrel with a mid-length gas system that taps gas from farther up the barrel than a standard carbine-length gun for extra-smooth cycling and extraction. M4-style handguard.


AR-15, Issue:11, Page:017
Big Book Catalog, Issue:70, Page:015
Gas Piston Upper Receiver, Carbine
5.0 5.0 based on 6 reviews
Review Summary
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5.0

8/24/2013

Dave

St. Pete FL.

  • Pros Accurate, Easy To Adjust, Quality Construction
  • Best Uses Self Defense, Target Practice
  • Describe Yourself Occasional Shooter

Very happy !!

I installed this upper on to my RRA lower and the fit was great ..300 rounds latter and I couldn't be happier .Clean up was a breeze, no more soaking and scrubbing !!

5.0

3/27/2013

Devil Dog

Clarksville, TN

  • Pros Accurate, Easy To Adjust, Lightweight, Quality Construction
  • Best Uses Hunting, Self Defense, Tactical, Target Practice
  • Describe Yourself Law Enforcement/Military
  • Was this a gift? No

Awesome upper

Great upper, this is my first AR build and I know where my next upper will come from. I have shot quality ammo as well as cheap ammo with no problems. I recommend this to anyone looking for a quality upper.

5.0

5/25/2012

panolorepete

Sacramento

  • Pros Accurate, Easy to clean, Quality Construction
  • Best Uses All of the above
  • Describe Yourself Gun Collector
  • Was this a gift? No

Excellent upper!

I wantedvto tryyh an upper with a piston system. I am sick of dirty gas system. So, I grid One of Adams Arms uppers. It has the ""NATO" chamber and the 1-7"twist rate which allows me to shoot the long 77 grain bullets. And let me troll you it does. Gun is delivering nickel sized 10 round groups at 100 yards. Well ii bought a second upper because I loved the first so much. The my Mother's husband got one as well. The piston system is easy to clean and there is no dirt in the action! No carbon to remove from bolt etc.These are not rapid fire uppers. 12- 15 rounds per minute max. They are accurate!

5.0

5/18/2012

Retired Chief

East Central Florida

  • Pros Accurate, Easy To Adjust, Lightweight, Quality Construction
  • Best Uses Competitive Shooting, Hunting, Self Defense, Tactical, Target Practice
  • Describe Yourself Occasional Shooter
  • Was this a gift? No

Great Upper

I have two Adams Arms Carbine gas piston uppers. I received one on an AR my son gave me for Christmas and one for a build I did after shooting my "present"! It is cooler to run and MUCH cleaner than a DI upper. More expensive than a DI upper but well worth the extra cost!

5.0

3/17/2012

A-Grunt

Camp Lejeune, NC

  • Pros Accurate, Easy To Adjust, Good price for gas piston, Lightweight, Quality Construction
  • Cons A bit more costly than DI
  • Best Uses Any shooting needs, Competitive Shooting, Hunting, Self Defense, Tactical, Target Practice
  • Describe Yourself Law Enforcement/Military
  • Was this a gift? No

Amazing equipment at a great price.

Use: Recreational shootingPros: Gas piston system, ease of removal and cleaning, slight reduction in felt recoil, adjustable gas block, it will definately give you the "what is that?" look from people at the range.Cons: It is priced a little more than a DI upper, but it is money well spent. Not all handguards will fit due to the gas piston system (my MOE fit just fine though).I'm in the Marines as a grunt, I just wish this was something we could be issued. Straight from the box to a lower then to the range. I put 60 rounds of range ammo through it with no problems. After a few sight adjustments on my MBUS I had tight constant groups. Single shot, controlled pairs, hammer pairs, it didn't matter. This thing ate through the ammo like a champ....just like it was designed to.

5.0

6/8/2011

Steve

Susanville CA

  • Pros Accurate, Easy To Adjust, Quality Construction
  • Best Uses Hunting, Self Defense, Tactical, Target Practice
  • Describe Yourself Law Enforcement/Military
  • Was this a gift? No

Best bang for the buck

All of Adams arms stuff is great! Easy to clean, simple system. Hit the target where you want. You can't go wrong when you buy this!

Ar-15/m16 5.56 16 Basic Piston Upper Receivers. InStock yes  Valid Offer! Things to Buy at this store. If you are not fully satisfied with your purchase, you are welcome to return any unworn and unwashed items with tags intact and original packaging included.Buy at this store. See Detail Online And Read Customers Reviews Ar-15/m16 5.56 16 Basic Piston Upper Receivers. prices over the online source See people who buy "Ar-15/m16 5.56 16 Basic Piston Upper Receivers. "Research before buy online Ar-15/m16 5.56 16 Basic Piston Upper Receivers. Make sure the shop keep your private information private before buying Ar-15/m16 5.56 16 Basic Piston Upper Receivers. Make sure you can proceed credit card online to buy Ar-15/m16 5.56 16 Basic Piston Upper Receivers. while the store protects your information.

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