What is Upper Receiver?

Upper receiver is the metal frame that holds the barrel and bolt assembly of a rifle. It is typically made of aluminum or steel and is responsible for directing bullets out the barrel and cycling rounds into the chamber. Upper receivers are often customized with different attachments, such as optics or a grenade launcher, to improve accuracy or effectiveness.

TOP Upper Receivers

Best 300 Blackout Upper 2023

Best 300 Blackout Upper 2023

What is  300 Blackout Upper? 😏 It also known as 300 BLK or 300 BO, is a specialized rifle platform designed to fire 300 AAC Blackout rounds. This platform has quickly become a favourite among many shooters due to its versatility and compatibility with multiple different ammunition types. Features 🔥 🟡 They come in a range of styles and form factors, from classic A2-style uppers to more modern flat tops and KeyMod designs. 🟡 Many of them are made from high-quality ...
TOP 11 Best 450 Bushmaster Upper

Best 450 Bushmaster Upper

Our Selection 11 Best 450 Bushmaster Upper A .450 Bushmaster is constructed as an AR-15-friendly round with a good down-range performance and energy, appropriate for hunting. With the .450 Bushmaster, you can shoot down the game fast and humanely at 200 to 300 yards. The firing efficacy depends on proper barrel length: from a 16 inch to a 20-inch length is the best choice. The upper receiver is attached to the barrel and the forend, coming with the bolt carrier ...
TOP 8 224 Valkyrie Upper

Best 224 Valkyrie Upper

Our Selection 8 Best 224 Valkyrie Upper .224 Valkyrie is a predator hunting cartridge, which can fit an AR-15 magazine properly. .224 Valkyrie rounds enhance the AR-15 platform potential, featuring long-range performance similar to larger calibers (the 6.5 Creedmoor shot from AR-10). To reach maximum results these bullets should be shot through a good barrel. .224 Valkyrie bullets significantly made trajectories and ballistics better over other AR-15 calibers (5.56x45mm NATO or 6.5 Grendel). Why do we need 224 Valkyrie upper? ...
Top 22 AR 15 Upper

Best AR-15 Upper 2023

What is AR-15 Upper? 🧐 These are the upper half of an AR-15 rifle which contains the barrel, bolt carrier group, charging handle, ejection port cover and sights. The Upper is where all of the action takes place in an AR-15 rifle. It houses the chamber, firing pin and extractor components as well as provides for mounting of additional accessories such as optics, lasers and flash suppressors. Features 💥 🎯 They come in all shapes and sizes, from 16” 18” ...

Upper Receivers benefits

There are many benefits to having an upper receiver:

  • For one, it allows you to have a more customizable gun. You can add different sights, scopes, and other accessories to the upper receiver to make your gun more accurate and effective. Additionally, an upper receiver can help to increase the durability of your gun, as well as its overall performance.
  • Another benefit of an upper receiver is that it can help to make your gun more ergonomic. By having an upper receiver, you can place your hand in a more comfortable position when shooting your gun. This can help to reduce fatigue and improve your accuracy.
  • Lastly, an upper receiver can also help to increase the value of your gun. If you ever decide to sell your gun, having an upper receiver can make it more valuable to potential buyers. So, if you are looking for a way to improve your gun, or simply want to add value to it, then an upper receiver is a great option.

Types of Upper Receivers

  • Flat top receiver is the most popular type on the market today. It allows for the mounting of scopes and other optics directly to the receiver.
  • Free float handguard attaches directly to the barrel, providing a more solid platform for mounting optics and accessories. It also helps to improve accuracy by keeping the barrel from heating up too much.
  • A1 upper receiver was the standard receiver used on M16 rifles prior to the adoption of the A2 in 1983. It has a fixed carrying handle and iron sights.
  • A2 upper is the standard upper receiver found on most AR-15s. It has a fixed carry handle and an integrated rear sight.
  • M4 upper is similar to the A2 but has a removable carry handle and a Picatinny rail for mounting optics.

AmmoCave has a great selection of upper receivers from top brands like Aero Precision, Anderson Manufacturing, and more.

Upper Receiver Features

Upper Receivers are the part of the firearm that houses the bolt carrier group and barrel. They are available for purchase as complete units or as stripped units (no BCG or barrel).

When it comes to choosing an upper receiver, there are a few things you need to take into consideration.

  • First, decide what caliber you want to build your rifle in. This will determine the type of barrel and bolt carrier group you need.
  • Next, decide what type of handguard you want to use. This will determine the length and height of the receiver.
  • Finally, choose a finish for your upper receiver. This can be anything from bare metal to anodized to Cerakoted.

Once you have all of this information, you are ready to purchase an upper receiver! Here at AmmoCave, we offer a wide selection of upper receivers for you to choose from. If you have any questions about the process, or which parts you need, feel free to reach out to our experts here at AmmoCave. We are always happy to help!

Gun Upper Buyer’s Guides