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Complete Upper Receiver

Best Sellers
  1. Ar-15 14.5 Complete Upper Receiver - Complete Upper Receiver 14.5"
    Item#:
    160-000-393  
    Our Price:
    $959.99
    Description:
    Add the Colt legend of reliability to you rifle or build with these complete upper receivers from Colt. These are the same upper receivers that can be found on the LE6920, LE6920 SOCOM, and LE6940 model rifles. LE6944CK features a one-piece monolithic upper receiver that has a continuous Mil-Spec rail from the rear of the upper receiver to the front sight and a free floating barrel. LE6944CK has a 14.5” barrel. Includes a charging handle, bolt carrier group, and back up sights. All NFA rules apply. Mfg: Colt
  2. Ar-15 Complete Upper Receiver Black Keymod 5.56
    Item#:
    100-020-540  
    Our Price:
    $324.99
    List Price: $369.99
    Description:
    This Brownells’ exclusive Complete AR Upper Receiver is chambered in 5.56x45mm NATO and made in the USA. Includes a low profile gas block, bolt carrier group, charging handle, forward assist, ejection port cover and phosphate finish help to complete this outstanding package. The 16” standard M4 carbine length barrel features a standard M4 contour with a 1:8 twist. A standard A3 13-slot aluminum flat top receiver comes with a 10” free-float handguard utilizing the KeyMod rail system. 7075 aluminum Mil-Spec upper receiver M4 feed ramps 416R steel barrel with black nitride finish inside and out Standard A2 birdcage style threaded flash hider Mfg: Brownells
  3. Ar-15 Complete Upper Receiver Black Keymod 300 Blk
    Item#:
    100-023-018  
    Our Price:
    $369.99
    Description:
    This Brownells’ exclusive Complete AR Upper Receiver is Made in the USA.  Chambered in 300 Blackout and featuring a 16” barrel with a 1:8 twist.  The standard A3 13-slot aluminum flat top receiver comes with a 10” handguard utilizing the KeyMod rail system.  A low profile gas block, bolt carrier group,  charging handle, forward assist, ejection port cover and phosphate finish help to complete this outstanding package.  This complete A3 upper receiver will attach to almost any standard AR-15 lower receiver. Mfg: Brownells
  4. Ar-15/M16 300 Blackout Upper Receiver - Ar-15/M16 300 Blackout Complete Upper Receiver
    Item#:
    100-014-182  
    Our Price:
    $1,150.99
    Description:
    The TSAR-300K is the only 300 AAC ®Blackout® upper which provides the versatility of a short barreled rifle (SBR) upper without the red tape and NFA paperwork. Most .30 Cal Suppressors* fit inside the circumference of a permanently attached shroud allowing shooters to attach a suppressor without significantly increasing the overall length of the rifle. The TSAR-300 is full auto rated with a mil-spec bolt carrier group. Every upper comes with a TacSol two piece Keymod free float hand guard and inert suppressor.*Not all .30 caliber suppressors are compatible with the TSAR-300. Suppressor cannot require access to the threads to detach/attach. Mfg: Tactical Solutions, Llc
  5. Ar-15 Complete Upper Keymod 5.56 W/ 5-Pk 30-Rd Pmag
    Item#:
    100-023-286  
    Our Price:
    $374.99
    List Price: $431.49
    Description:
    This Brownells’ exclusive Complete AR Upper Receiver is Made in the USA.  Chambered in 5.56x45mm NATO and featuring a 16” barrel with a 1:8 twist.  The standard A3 13-slot aluminum flat top receiver comes with a 10” handguard utilizing the KeyMod rail system.  A low profile gas block, bolt carrier group,  charging handle, forward assist, ejection port cover and phosphate finish help to complete this outstanding package.  This complete A3 upper receiver will attach to almost any standard AR-15 lower receiver. The receiver is being paired with 5 Magpul PMAGs for even better savings! Exceptionally rugged, combat- and competition-ready magazine Mfg: Brownells

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Gas Piston Upper Receiver

Related Items
  1. Ar-15/M16 5.56 16" Basic Piston Upper Receivers - Gas Piston Upper Receiver, Carbine
    Item#:
    100-005-989  
    Our Price:
    $529.99
    Description:
    Ready To Install To Make A Reliable, Clean Running Piston Rifle
  2. Ar-15/M16 5.56 16" Basic Piston Upper Receivers - Gas Piston Upper Receiver, Midlength
    Item#:
    100-009-248  
    Our Price:
    $529.99
    Description:
    Ready To Install To Make A Reliable, Clean Running Piston Rifle
  3. Ar-15/M16 Piston Tactical Evo Upper Receivers - Gas Piston Upper Receiver Tac Evo Mid-Length
    Item#:
    100-013-533  
    Our Price:
    $719.99
    Description:
    Ready To Fire, Drop In Upper Assembly Runs Cool & Clean
  4. Ar-15/M16 Piston Tactical Evo Upper Receivers - Gas Piston Upper Receiver Tactical Evo Carbine
    Item#:
    100-013-532  
    Our Price:
    $699.99
    Description:
    Ready To Fire, Drop In Upper Assembly Runs Cool & Clean
  5. Ar-15/M16 Tactical Elite Piston Upper Receivers - Gas Piston Upper Receiver Tac Elite, Mid-Length
    Item#:
    100-013-536  
    Our Price:
    $719.99
    Description:
    Ready To Install To Make A Reliable, Clean Running Piston Carbine Or Pistol
  6. Ar-15/M16 Tactical Elite Piston Upper Receivers - Gas Piston Upper Receiver, Pistol
    Item#:
    100-005-990  
    Our Price:
    $699.99
    Description:
    Ready To Install To Make A Reliable, Clean Running Piston Carbine Or Pistol

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Rifle Ammo
  1. Superformance Ammo 7mm-08 Remington 139gr Gmx - 7mm-08 Remington 139gr Gmx 20/Box
    Item#:
    749-101-472  
    Our Price:
    $35.79
    Description:
    Hornady has made a monumental breakthrough with its Superformance Ammunition increasing bullet velocity by an average of 100 to 200 fps for any caliber, bullet weight, or bullet type using progressive propellants. Superformance Ammunition can be used in any rifle without increasing felt recoil, muzzle blast, temperature sensitivity, fouling or loss of accuracy. Simply put, Superformance Ammunition is highly accurate, deadly, dependable, and just raised the bar by which all other ammunition will be judged. Previously, in order to attain high-velocity loads, shooters had to use the large charge weights and a slow-burning powder found in light magnum or custom loads, which typically result i Mfg: Hornady
  2. Solid Defense Ammo 223 Remington 70gr Tsx - 223 Remington 70gr Triple Shock-X 50/Box
    Item#:
    749-012-352  
    Our Price:
    $65.99
    Description:
    ASYM PRECISION Ammunition is meticulously manufactured using premium components, each carefully selected to deliver optimum performance. Our ammunition delivers the ultimate in reliability, match grade accuracy, consistency and clean burn, so shooters can focus on their marksmanship and tactics, rather than equipment. ASYM PRECISION law enforcement and defensive ammunition is purpose built to provide dependable, fight stopping terminal performance with minimum flash. Extensive quality control methods and procedures are used. Each cartridge is hand and mechanically inspected as well as gauge checked in a minimum spec chamber to ensure flawless chambering in any in-spec firearm. Lot ru Mfg: Asym Precision Ammunition
  3. Tactical Match Grade Ammo 223 Remington 68gr Otm Bthp - 223 Remington 68gr Otm W/Cannelure 50/Box
    Item#:
    749-012-351  
    Our Price:
    $40.99
    Description:
    ASYM PRECISION Ammunition is meticulously manufactured using premium components, each carefully selected to deliver optimum performance. Our ammunition delivers the ultimate in reliability, match grade accuracy, consistency and clean burn, so shooters can focus on their marksmanship and tactics, rather than equipment. ASYM PRECISION law enforcement and defensive ammunition is purpose built to provide dependable, fight stopping terminal performance with minimum flash. Extensive quality control methods and procedures are used. Each cartridge is hand and mechanically inspected as well as gauge checked in a minimum spec chamber to ensure flawless chambering in any in-spec firearm. Lot ru Mfg: Asym Precision Ammunition
  4. Tactical Match Grade Ammo 308 Winchester 168gr Sierra Matchking - 308 Winchester 168gr Otm Sierra Ma
    Item#:
    749-012-354  
    Our Price:
    $39.99
    Description:
    ASYM PRECISION Ammunition is meticulously manufactured using premium components, each carefully selected to deliver optimum performance. Our ammunition delivers the ultimate in reliability, match grade accuracy, consistency and clean burn, so shooters can focus on their marksmanship and tactics, rather than equipment. ASYM PRECISION law enforcement and defensive ammunition is purpose built to provide dependable, fight stopping terminal performance with minimum flash. Extensive quality control methods and procedures are used. Each cartridge is hand and mechanically inspected as well as gauge checked in a minimum spec chamber to ensure flawless chambering in any in-spec firearm. Lot ru Mfg: Asym Precision Ammunition
  5. Rifle Ammo Boxes - Ammo Boxes Rifle Green 22 Benchrest Rem-6mm Rem Benchrest 25
    Item#:
    749-006-478  
    Our Price:
    $65.99
    Description:
    RIFLE AMMO BOXES Mfg: Sinclair International
  6. American Eagle Ammo 5.56x45mm Nato 55gr Xm193 With Pmags - 5.56x45mm Nato 55gr Fmj 200 Rounds & 3 30
    Item#:
    100-007-780  
    Our Price:
    $124.99
    Description:
    200 rounds of American Eagle 5.56mm ammunition and three Magpul Pmags allows for an easy and economical way to get your AR-15 out on the range. 55 grain ammunition will shoot well for a wide range of AR-15 rifle barrels, working with twist rates ranging from 1-7 to 1-12. Mfg: Brownells

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So, you're looking for Complete Upper Receiver? Brownells.com has the best selection and pricing around. We've got 32 Complete Upper Receiver and Gas Piston Upper Receiver, from $219.99 to $4,195.00, meaning your search is over. As the internet's top seller of gun parts and gunsmith tools, we're able to bring you the best products, excellent prices, and reliable customer service every day. We love the products we sell, and we know you will, too. We provide a 100% satisfaction guarantee with all of our products, so if you're not satisfied with your Complete Upper Receiver for any reason, let us know right away. Shop our inventory of Complete Upper Receiver and place your order on the web or over the phone. We're here to provide you with all the gun parts and gunsmith tools and information you need, so - if you don't find what you're looking for online - give us a call!