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.300 Blackout 223 / 5.56 7.62 x 39

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 an 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, stainless or QPQ finish.


For even more customization, check out our selection of free float hand guards. You can choose from our many AR upper options that include quad rails, 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 9 inch keymod 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 II anodizing with laser engraved T-marks.


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!

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PMA 7.5" M4 Quad Rail Pistol Upper Assembly PMA 7.5" .300 Blackout Upper
Our Price: $229.99

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