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Dive into our assortment of premium upper receivers, meticulously engineered to elevate your firearm’s performance. From AR-15 uppers to specialized variants (Piston Uppers, Short Barreled Uppers, and Upper Components), each unit is a testament to precision craftsmanship and enduring durability.
With an eye for superior performance Adams Arms has crafted an ergonomic, compact, and self-cleaning Upper Receiver that are ambidextrous and available in multiple sizes. Compatible with bolt carrier groups these AR15 upper receivers have been designed to fit most standard mil-spec AR15s.
The Adams Arms Upper P1 556 16 inches is a premium upper assembly designed for exceptional performance and reliability. This upper assembly is chambered in 5.56x45mm, offering versatility and compatibility with a wide range of ammunition.
- Adams Arms
- 51.7B
- FGAA01357
- 812.2B
- The Quick List
- Getting A Piston AR-15 Without Breaking The Bank
- Why Choose A Piston AR-15?
- Downsides to Piston AR-15s
- Best AR-15 Piston Uppers
- AR-15 Piston Conversion Kits
- Final Thoughts
Best Budget Piston UpperAdams Arms P2 AARS UpperJump to DetailsEditor’s PickPrimary Weapons Systems MK116 MOD 2-M UpperJump to DetailsBest Top-of-the-Line Piston UpperLWRC IC-SPR UpperJump to DetailsBest Piston Conversion KitAdams Arms P Series Micro Block Mid Length Piston KitJump to DetailsWell, if you’re anything like me when I started out, you probably already have a cheaper DI AR-15 lying around. If that’s the case, you can simply switch outthe upper receiver with a piston-driven upper receiver and be on your merry way, or you can use a kit to convert your DI system into a piston one. If you don’t already have an AR-15, I highlyre...
This is going to be a bit of a Coke vs. Pepsi, Ford vs. Chevy, Superman vs. Goku type of deal, so it’s important to understand right away that a lot of this is going to come down to personal preference. However, there are some tangible benefits to choosing a piston AR, but you’ll have to decide if they’re worth it to you Also, the correct choices a...
Now, it wouldn’t be much of a choice if that was the whole story. There are some downsidesto the piston lifestyle that I want to go over as well. First, they’re pricey. Some of these upper receivers alone cost as much as a fully-kitted direct impingement gun. But, for some people, that’s okay. Second…parts can be a bear to find and match up properl...
1. POF P-415 Edge
The POF P-415 Edge packs a ton of featuresat its price point. This short-stroke piston upper sports a nitride heat-treated barrel, heat sink barrel nut, roller-cam pin bolt-carrier group, user-adjustable gas system, muzzle brake, a full-length M-LOK rail with QD sling points, and POF’s patented E2 extraction technology. Patriot Ordnance Factory has been making the Edge and improving it since 2002. This upper is a proven design that gets you all the premium features out of the box without need...
2. Adams Arms P1/P2 AARS/P3 AARS Uppers
The P1/P2/P3series from Adams Arms is a great choice for a solid, reliable, piston upper. Basically, the P1 is their basic entry tier upper that comes in around the $600 range. The P2 is their standard model at around $850. Lastly, the P3 is their higher tier upper designed for competition or duty use and is reflected in the near $1,700 price. If you step up to the P2 and P3 series, you are treated with a high-quality free-floated M-LOK handguard.The P3 model even comes equipped with a carbon...
3. PWS MK116 MOD 2-M
When the apocalypse has come, and you’re digging through the local gun store to try and build something that will help you survive the wasteland that our world has become, the PWS MK116 MOD 2-Mis the one. All kidding aside, Primary Weapon Systems has made what is, in my mind, one of the very best drop-in, no-fuss, shoot-all-day, piston-driven upper on the market today — they are an industry standard and a common recommendation for all the right reasons. This upper has all the features you cou...
1. Adams Arms P-Series Micro Block Piston Kit
Now, if you don’t want to buy a whole new upper, there are also a number of gas conversion kits out there that will take your DI gun and convert it to a piston system. I’ve tried several, and I hated all of them except Adams Arms. The Adams Arms Piston Conversion Kit will let you convert your DI upper into a piston upper with a minimum amount of fuss. Kits are available for carbine, mid, and rifle-length uppers. I love their piston system; I’ve used two of their older ones, and I couldn’t be...
2. Superlative Arms Adjustable Piston Kit
I love Superlative Arm’s adjustable gas block. In fact…it’s the only one that I use now. See our full review. While I haven’t tried out their piston systemyet, I am eager to give it a shot due to it having the same rave reviews as their renowned DI gas blocks. I also appreciate how you can easily find the different gas lengths for the Superlative, as well as pencil barrel sizes in stock.
That about does it for this one, guys and gals. I hope these recommendations help those looking for a piston-based AR-15 upper. Do you use a piston upper? Did you switch back to DI? Let us know in the comments! Want a normal DI upper? We’ve got our favorites in our Best AR-15 Upper Assemblies for the Moneyguide!
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This Adams Arms P2 Adjustable Gas Piston Upper Assembly is chambered in 5.56x45mm NATO and comes ready to fire right out of the box after installation onto any standard AR-15 pistol or registered SBR lower receiver.
- (3)
- 11.5 Inches
- Adams Arms
- 4150 Chrome Moly Vanadium Steel
Adams Arms FGAA01362 P2 AARS Complete Upper AR-Platform 5.56x45mm NATO 16" Black - The Adams Arms P2 model is the tactical, battle-ready model in the P-Series lineup. The P2 model includes an ergonomic free float rail that covers the P-Series Micro Block Adjustable piston system.
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This Adams Arms Tactical EVO Mid Length Gas Piston Upper Assembly is chambered in 5.56x45mm NATO and comes ready to fire right out of the box upon installation onto any standard AR-15 lower receiver.
