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AR Upper Parts

57 of 57 Items
  • AR-10/.308 Forged Stripped Upper Receiver AR-10/.308 Forged Stripped Upper Receiver AR-10/.308 Forged Stripped Upper Receiver AR-10/.308 Forged Stripped Upper Receiver

    AR-10/.308 Forged Stripped Upper Receiver

    Finished up your 80% lower or stripped lower and want to assemble your own upper receiver piece by piece? Start with quality: Grab one of our forged, mil-spec (7075-T6) "Flattop" stripped AR10 upper receivers. This M4-type upper features a standard...

    $89.99
  • JE Machine 223 Ambi Charging Handle 1 JE Machine 223 Ambi Charging Handle 2 JE Machine 223 Ambi Charging Handle 3

    JE Machine 223 Ambidextrous Charging Handle

    This ambidextrous charging handle is designed to work with all standard AR-15 upper receivers. Leftie shooters rejoice -- now you can properly chamber rounds with ease! Gone is the mil-spec lever, which makes operating the handle a pain. This handle...

    $19.99
  • Magpul AFG-2® - Angled Fore Grip

    Magpul® AFG-2® - Angled Fore Grip

    The Magpul Angled Fore Grip (AFG-2) overall has a shorter length, width, and slimmer design than its predecessor, Magpul's original AFG. There is less recoil and more control using this fore grip since the shooter's hand is naturally placed in the center...

    $33.20
  • Magpul M-LOK® Hand Stop Kit

    Magpul® M-LOK® Hand Stop Kit

    The Magpul M-LOK Hand Stop Kit has a low profile, lightweight design for enhanced weapon control. The M-LOK index point has a forward stop that prevents the shooter's hand from shifting towards the muzzle or front sight assembly.  Additional...

    $23.70
  • AR-9 Bolt Carrier Group (Nitride) - 9mm 3 AR-9 Bolt Carrier Group (Nitride) - 9mm 2 AR-9 Bolt Carrier Group (Nitride) - 9mm AR-9 Bolt Carrier Group (Nitride) - 9mm 4

    AR-9 Bolt Carrier Group (Nitride) - 9mm

    You've meticulously picked out the parts needed for your new AR9 upper, and now you need  that final piece that is going to breathe some life into. Made in the USA, this AR9 Bolt Carrier Group is machined from 8620 Steel that ensures a high...

    $109.99
  • Rifle-Length Gas Tube

    Rifle-Length Gas Tube

    The perfect gas tube for a gas-operated AR with a rifle-length system. This tube is compatible with AR-15 and AR-10 sized rifles. See below for more info. Features: Stainless Steel Rifle Length Gas Tube for AR15 & AR10 rifles Rifle length 15...

    $11.99
  • 12-m-lok-free-floating-handguard-1 12-m-lok-free-floating-handguard-2 12-m-lok-free-floating-handguard-3 12-m-lok-free-floating-handguard-4 12-m-lok-free-floating-handguard-5

    12" M-Lok Free-Floating Handguard

    Need some "front end" to finish off that AR build of yours? How 'bout 12 inches of it? Put the finishing touches on your standard-sized AR-15 with this handguard. You get enough rail space on top to mount your backup sights or even optics. The M-Lok...

    $69.99
  • AR 10 / LR-308 "Birdcage" Flash Hider (5/8x24 Threads) AR 10 / LR-308 "Birdcage" Flash Hider (5/8x24 Threads)

    AR 10 / LR-308 "Birdcage" Flash Hider (5/8x24 Threads)

    A standard, A2-style flash hider for your AR 10 / LR-308 rifle. Features standard 5/8x24 TPI threads for universal compatibility with .30-caliber, AR-type barrels. Made from solid 4150 steel with a matte Parkerized finish. Features classic "A2"-style,...

    $6.99
  • .308 Dust Cover / Ejection Port Cover Assembly

    .308 Dust Cover / Ejection Port Cover Assembly

    US-made. Includes dust cover, rod, and spring. A simple, quality .308 dust cover for finishing your custom, stripped .308 upper receiver. Fits all DPMS-patterned LR-308 / AR-10 receivers. Made from billet (6061-T6) aluminum, and finished with a mil-spec...

    $7.99
  • Midwest Industries Muzzle Brake for AR Rifles

    Midwest Industries Muzzle Brake for AR Rifles

    If managing recoil for your AR is your primary concern, you'll want a muzzle brake that does the utmost to mitigate it. The Midwest Industries Muzzle Brake does just that. Throw compensation and hiding your flash to the wind, and get the most recoil...

    $29.95
  • Aero Precision Gamma 556 Muzzle Brake Aero Precision Gamma 556 Muzzle Brake

    Aero Precision VG6 Gamma 556 Muzzle Brake V2

    If being quick with follow-up shots from your AR-15 counts, you'll want either a muzzle brake to control recoil or a compensator to reduce muzzle rise. The good people at Aero Precision want you to have both, in one single device. This is the Gamma 556...

    $84.99
  • Midwest Industries 2-Chamber Muzzle Brake Midwest Industries 2-Chamber Muzzle Brake

    Midwest Industries 2-Chamber Muzzle Brake

    The AR-15's A2 "birdcage" flash hider really is a great design. It dissipates expelled gas, usually in five directions, pointed in several upward and side-facing paths. It keeps your visual path to the target clear, so you can quickly re-level your aim...

    $39.95
  • KAK Industry 5/8" Crush Washer - 5/8x24

    KAK Industry 5/8" Crush Washer - 5/8x24

    Designed for all 5/8x24 and .30-cal, AR-type muzzle brakes. A 5/8" crush washer is required for ensuring your AR's muzzle brake is properly indexed and torqued to spec. This crush washer is compatible with all .30-caliber AR barrels and works with any...

    $2.99
  • Aero Precision Gamma 7.62 Muzzle Brake Aero Precision Gamma 7.62 Muzzle Brake Aero Precision Gamma 7.62 Muzzle Brake

    Aero Precision Gamma 7.62 Muzzle Brake

    If being quick with follow-up shots from your LR-308 counts, you'll want either a muzzle brake to control recoil or a compensator to reduce muzzle rise. The good people at Aero Precision want you to have both, in one single device. This is the Gamma 7.62...

    $76.49
  • Rise Armament .223/5.56 RA-701 Compensator Rise Armament .223/5.56 RA-701 Compensator

    Rise Armament .223/5.56 RA-701 Compensator

    Want to completely eliminate muzzle rize? Reduce felt recoil by 67%? Add a badass-lookin' muzzle device on your AR-15 in the process? You can check all three boxes and keep some cash in your wallet with Rise Armament's affordable RA-701 Compensator. This...

    $89.00
  • Magpul MOE® Carbine-Length M-LOK Handguard

    Magpul MOE® Carbine-Length M-LOK Handguard

    Introducing the Magpul MOE M-Lok Handguard, your go-to choice for a lightweight solution tailored for a carbine-length AR15. Engineered from a durable, heat-resistant polymer, this handguard has an exceptional balance of strength and feather-light design...

    $35.10
  • JE Machine 223 Mil-Spec Charging Handle 1 JE Machine 223 Mil-Spec Charging Handle 2 JE Machine 223 Mil-Spec Charging Handle 3

    JE Machine 223 Mil-Spec Charging Handle

    JE Machine's standard AR 15 charging handle is from made from lightweight, durable 6061-T6 billet aluminum. It's also anodized black with a mil-spec, Type III hardcoat finish, ensuring it matches any typical AR upper and lower receiver combo. Charging...

    $19.99
  • Sale
    Spike's Tactical R2 5.56 Muzzle Brake Spike's Tactical R2 5.56 Muzzle Brake Spike's Tactical R2 5.56 Muzzle Brake

    Spike's Tactical R2 5.56 Muzzle Brake

    Spike's Tactical gets it when it comes to reducing felt recoil for your AR-15. Sure the AR might not kick a lot to begin with, but for you that have AR pistols and generally shorter-barreled builds, the R2 from Spike's Tactical will work wonders. The R2...

    Was: $59.99
    Now: $38.97
  • AR-15 A2 "Birdcage" .223/5.56mm Flash Hider AR-15 A2 "Birdcage" .223/5.56mm Flash Hider 2

    AR-15 A2 "Birdcage" .223/5.56mm Flash Hider

    Your AR-15 needs a solid muzzle device right out of the gate to get your build up and running. The AR-15 A2 "Birdcage" .223/5.56mm Flash Hider is the jack of all trades when it comes to muzzle devices. Due to its 5-port design, it adequately conceals the...

    $8.99
57 of 57 Items

 Pre-built uppers, custom barrels, upgraded handguards, muzzle devices and more.

Grab everything you need to build or upgrade your first or next AR-15 upper! We've worked closely with top makers like M-LOK, Aero Precision, GLOCK, and others to provide high-speed upgrades and OEM parts required to finishing or tricking out your custom AR rifle or pistol.

Precision-Built Uppers

All upper assemblies are assembled, torqued and function-tested to ensure your AR's ready to send rounds downrange once you tap down those pivot pins. Each upper assembly includes a mil-spec, M16-profile bolt carrier group and charging handle. All you need is your finished lower assembly! 

Assemble a custom upper with our how-to guide.

What Parts go in an AR-15 upper?

If you're building your assembly from scratch, your AR-type upper (and generally all upper assemblies, regardless of caliber) require the following upper parts. Our prebuilt upper assemblies include all components listed below:

  • Stripped Upper Receiver: The stripped upper houses the bolt carrier group and charging handle. It's also machined with threads and a small hole to attach the barrel and gas tube. 

 

  • Barrel: The barrel attaches to the receiver using a barrel nut. Most often, you'll use the barrel nut suppled with your handguard to attach both the guard and the barrel to the receiver. Most barrels are threaded for attaching a muzzle device, like a brake, compensator, or flash hider.

 

  • Handguard: Handguards are most often free-float, one-piece units machined from billet aluminum. They include attachment systems like Picatinny rails or M-LOK slots for installing accessories like a foregrip or flashflight.

 

  • Gas system: The gas system includes a gas block, pins to secure the block to the barrel, and a gas tube that feeds back into the upper receiver and bolt carrier.

 

  • Bolt carrier group with handle: The BCG includes the bolt, firing pin, and mechanisms for chambering, extracting, and feeding rounds from the lower receiver into the upper receiver and barrel. Our uppers typically include a BCG and charging handle, but it will be clearly noted where they are not included. Rest assured we source high-quality BCGs built to mil-spec standards.

 

  • Muzzle Device: Although not required, it pays to install a muzzle device on your barrel - especially since most are threaded. A muzzle device can help improve accuracy, reduce felt recoil, and redirect spent gas from the muzzle away from the shooter, reducing muzzle blast.

Easy Drop-in Upgrades

Even if you just bought or built your AR-15, there's plenty of opportunity to upgrade. Make reloads quicker and easy -- especially if you're running a glass optic -- by investing in an oversized charging handle. Want tighter shot groups with less recoil? It takes a few minutes to swap out and torque down a new compensator, like the popular Midwest Industries Muzzle Brake. Piecing together an upgraded mil-spec rifle? Check out our M4-profile barrels, forged from 4150 CMV.


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