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Complete Upper Receiver

Best Sellers
  1. 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
  2. Fn15/Ar 18" Dmr Upper Receiver Assembly
    Item#:
    119-000-260  
    Our Price:
    $1,199.99
    Description:
    FNH USA FN15/AR Upper Receiver Assemblies - Built to meet the demands of Law Enforcement and military operators, competitors and sportsmen alike, FN complete upper assemblies have been designed with your needs in mind.  Precise quality and compliance criteria ensure the highest degree of engineering and craftsmanship is employed in production and testing to secure consistent optimum performance. Mfg: Fnh Usa SPECS: Barrel: Barrel Length – 18”. Cold Hammer Forged Proprietary CrMoV Barrel Steel . Hard-Chrome Lined to MIL-STD 171. M4 Feed Ramps. High Pressure Tested. Magnetic Particle Inspected (MPI). Manganese Phosphate Finish. Chambered in 5.56X45mm. 1:7 RH Twist. Bolt Carrier Group: M16/A
  3. Fn15/Ar 16" Tactical Carbine Upper Receiver - Fn15/Ar 16"tactical  Upper Receiver Assembli
    Item#:
    119-000-261  
    Our Price:
    $949.00
    Description:
    FNH USA FN15/AR Upper Receiver Assemblies - Built to meet the demands of Law Enforcement and military operators, competitors and sportsmen alike, FN complete upper assemblies have been designed with your needs in mind.  Precise quality and compliance criteria ensure the highest degree of engineering and craftsmanship is employed in production and testing to secure consistent optimum performance. Mfg: Fnh Usa SPECS: Barrel: Barrel Length – 16”. Cold Hammer Forged Proprietary CrMoV Barrel Steel . Hard-Chrome Lined to MIL-STD 171. M4 Feed Ramps. High Pressure Tested. Magnetic Particle Inspected (MPI). Manganese Phosphate Finish. Chambered in 5.56X45mm. 1:7 RH Twist. Bolt Carrier Group: M16/A
  4. Upper Complete M4le Carb 9mm 16" Wasp
    Item#:
    100-007-275  
    Our Price:
    $749.99
    Description:
    9mm upper receiver Mil-spec A3 upper receiver 4140 W.A.S.P. barrel with 1:10 twist Ramped 9mm bolt uses standard AR-15 / M16 hammer Not for use with dedicated 9mm hammer F marked front sight base   The Upper Complete M4LE Carbine 9mm 16-inch WASP is the right choice to convert your M4 carbine to a 9mm carbine. Since the upper is complete this is a snap on, snap off addition. It has a ramped 9mm bolt that uses standard AR-15 / M16 hammer. Not for use with dedicated 9mm hammer. Uses existing fire control, just modify the magazine well to be shooting 9mm pistol ammunitions. Mfg: Cmmg SPECS: 9mm upper, Mil-spec A3 receiver, 4140 WASP barrel with 1:10 twist, Ramped 9mm bolt uses standard AR-15/M16 hammer, Not for use with 9mm hammer, F marked front sight base
  5. Fn15/Ar 16" Carbine Upper Receiver Assembly
    Item#:
    119-000-258  
    Our Price:
    $699.00
    Description:
    FNH USA FN15/AR Upper Receiver Assemblies - Built to meet the demands of Law Enforcement and military operators, competitors and sportsmen alike, FN complete upper assemblies have been designed with your needs in mind.  Precise quality and compliance criteria ensure the highest degree of engineering and craftsmanship is employed in production and testing to secure consistent optimum performance. Mfg: Fnh Usa SPECS: Barrel: Barrel Length – 16”. Cold Hammer Forged Proprietary CrMoV Barrel Steel . Hard-Chrome Lined to MIL-STD 171. M4 Feed Ramps. High Pressure Tested. Magnetic Particle Inspected (MPI). Manganese Phosphate Finish. Chambered in 5.56X45mm. 1:7 RH Twist. Bolt Carrier Group: M16/A
  6. Ar-15/M16 Complete 300aac Upper Assembly
    Item#:
    430-000-571  
    Our Price:
    $639.99
    Description:
    Build or convert a rifle to run the 300 Blackout round with this complete upper assembly from High Standard. The A3 flat top upper is coupled with a 16", parkerized barrel that has a 1-8 twist and is made from 4140 steel.Upper assembly also  includes bolt carrier group, charging handle, low profile gas block, and CAR handguard. Mfg: High Standard SPECS: 16", Parkerized, 4140steel, 1-8 twist barrel, Low profile gas block, Bolt carrier group, Charging handle

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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, Midlength
    Item#:
    100-009-248  
    Our Price:
    $550.99
    Description:
    Ready To Install To Make A Reliable, Clean Running Piston Rifle
  2. Ar-15/M16 Tactical Elite Piston Upper Receivers - Gas Piston Upper Receiver, Pistol
    Item#:
    100-005-990  
    Our Price:
    $735.00
    Description:
    Ready To Install To Make A Reliable, Clean Running Piston Carbine Or Pistol
  3. 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
  4. Ar-15/M16 Tactical Elite Piston Upper Receivers - Gas Piston Upper Receiver, Pistol Extended Rail
    Item#:
    100-005-991  
    Our Price:
    $699.60
    Description:
    Ready To Install To Make A Reliable, Clean Running Piston Carbine Or Pistol
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Rifle Ammo
  1. Power-Shok Soft Point Ammunition - Federal Ammo 30-06 Spgfld 150gr Hshk Sp 20rnds/Bx
    Item#:
    105-200-274  
    Our Price:
    $19.99
    Description:
    Power-Shok delivers consistent, reliable performance without a high-dollar price tag. When hunting the woods and clearings, Power-Shok handles almost any situation. Mfg: Federal See Item Details Below
  2. Power-Shok Soft Point Ammunition - Federal Ammo 300 Savage 150gr Hi-Shok Sp  20/Bx
    Item#:
    105-200-278  
    Our Price:
    $33.99
    Description:
    Power-Shok delivers consistent, reliable performance without a high-dollar price tag. When hunting the woods and clearings, Power-Shok handles almost any situation. Mfg: Federal See Item Details Below
  3. Power-Shok Soft Point Ammunition - Federal Ammo 30-06 Spgfld 180gr Hshk Sp 20rnds/Bx
    Item#:
    105-200-275  
    Our Price:
    $19.99
    Description:
    Power-Shok delivers consistent, reliable performance without a high-dollar price tag. When hunting the woods and clearings, Power-Shok handles almost any situation. Mfg: Federal See Item Details Below
  4. Power-Shok Soft Point Ammunition - Federal Ammo 762x39mm Sov 123gr Hshk Sp 20/Bx
    Item#:
    105-200-311  
    Our Price:
    $25.79
    Description:
    Power-Shok delivers consistent, reliable performance without a high-dollar price tag. When hunting the woods and clearings, Power-Shok handles almost any situation. Mfg: Federal See Item Details Below
  5. Power-Shok Soft Point Ammunition - Federal Ammo 7mm Rem Mag 150gr Hi-Shock Sp  20/Bx
    Item#:
    105-200-314  
    Our Price:
    $26.99
    Description:
    Power-Shok delivers consistent, reliable performance without a high-dollar price tag. When hunting the woods and clearings, Power-Shok handles almost any situation. Mfg: Federal See Item Details Below
  6. Power-Shok Soft Point Ammunition - Federal Ammo 7mm Rem Mag 175gr Hi-Shok Sp  20/Bx
    Item#:
    105-200-315  
    Our Price:
    $26.99
    Description:
    Power-Shok delivers consistent, reliable performance without a high-dollar price tag. When hunting the woods and clearings, Power-Shok handles almost any situation. Mfg: Federal See Item Details Below

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So, you're looking for Complete Upper Receiver? Brownells.com has the best selection and pricing around. We've got 7 Complete Upper Receiver and Gas Piston Upper Receiver, from $639.99 to $1,199.99, 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!