AR-15 Upper Assemblies
By choosing from among the AR-15 upper
assemblies we stock at PMA, you can rest assured that you’ll find exactly what
you need. PMA's AR-15 upper receivers are made from high-quality materials and
come with a MILSPEC flat top receiver with M4 feed ramps. They are available
with many choices of different barrels including our 4150 chrome moly barrel
with a phosphate finish or nitride finish.
For even more customization, check out our
selection of free float hand guards. You can choose from our many AR15 upper
options that include Keymod rails, M-Lok and basic hand guards. When
constructing your upper you can choose from multiple different twist rates and
lengths in order to meet your needs. One option available features a 16” 5.56
Barrel with a 1/9 twist and a carbine length gas system. The 12-inch MLOK rail
has a thin sleek feel that allows you to have superior control over the front
end of your rifle. We use nothing but high-quality steel gas blocks and tubes.
The standard A2 flash hider rounds out the upper or you could choose from our
premium muzzle devices. Each upper receiver features clean evenly applied Type
When deciding which AR parts you want to
include in your build there are several things you need to consider the
components are the Upper Receiver, Barrel, Gas Block, Hand Guard, Bolt Carrier
Group and Muzzle device.
Our uppers are cut to MILSPEC to ensure
continuity when choosing your other components. The uppers are cut from 7075 T6
aluminum forgings with M4 feed ramps. The picatinny rail has relief cuts that aid
with installing your sights and provide a clean look overall. They are then
tumbled and deburred before they are coated with Hard Coat Type II anodizing.
We use several different types of barrels. Our
standard “go to” barrel is cut from a 4150 Chromoly Vanadium barrel blank. They
are then turned in either Pistol Length Gas, Carbine Length Gas or Mid-Length
Gas and finished in either a medium contour or M4 profile. The barrels also
come dimpled to assist with alignment. As for coatings our main barrels are
Phosphate coated but we maintain multiple offerings in nitride as well. We also
offer several barrel upgrades in the drop-down menus.
What we believe is the most important part of
your AR-15 Upper is the gas block. Without a high-quality gas block the rifle will
not fire. A combination of misalignment and poor materials can make for a
challenging build and a terrible day at the range. Our gas blocks are CNC
machined 4140 Steel that have a slightly over sized port to capture all the gas
available to ensure your rifle operates consistently. They come heat treated and
nitride coated for a great looking block that exceeds the industry standard.
The free float hand guards we offer come in
two varieties. Currently available are Keymod and MLOK. The rails are 6061 Aluminum
and anodized black to mate with our black upper receivers. Our standard uppers the
come with handguards that are either 12”, 13” or 15”. Our Pistol Uppers and SBR
Uppers can range from 7” to 12” depending on the configuration chosen.
The muzzle device is also an integral part of
the upper as it can assist the shooter in controlling muzzle rise and off set
the flash created. Our Upper Receiver Assemblies come with a 5 port A2 Bird
cage muzzle device with the option of upgrading to a VG6 Gamma or Epsilon. Our
pistol uppers come with either an A2 bird cage or a Kak Industries Flash Can.
Our full range of AR-15
upper parts for sale is designed to provide you with everything you’ll need to
take your game to the next level. If you aren’t sure which AR upper assemblies
are best suited for your needs, speak to one of our veteran firearms experts
today. Or order now and design the most precise custom firearm available!