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Ar 15 Upper

Best Sellers
  1. Ar-15 5.56 11.5" M4 A2 Upper Kit - Ar-15 5.56 11.5" M4 A2 Upper Kit With Bcg
    Item#:
    100-017-385  
    Our Price:
    $459.99
    Description:
    Bushmaster M4 Upper Receiver Kit, ready to complete your build. Kit includes fully assembled A2 upper receiver, bolt carrier group, handguards and charging handle. Upper features a 11.5” M4 barrel which is machined from 4140 chrome moly steel, chrome lined, has a 1-9 twist, has a front sight base installed on a .750” barrel shoulder, ½-28 muzzle threads and an A2 flash hider installed. Upper receiver has M4 feed ramps, as well as an A2 rear sight. Included complete bolt carrier group has a matte black phosphate finish, is chrome lined and is magnetic particle inspected. All NFA rules apply. Mfg: Bushmaster Firearms Int.Llc.
  2. Ar-15 5.56 16" M4 Upper Kit - Ar-15 5.56 16" M4 Upper Kit With Bcg
    Item#:
    100-017-384  
    Our Price:
    $559.99
    Description:
    Bushmaster M4 Upper Receiver Kit, ready to complete your build.  Kit includes fully assembled upper receiver, bolt carrier group, handguards, charging handle and detachable carry handle.  Upper features a 16” M4 barrel which is machined from 4140 chrome moly steel, chrome lined, has a 1-9 twist, has a front sight base installed on a .750” barrel shoulder, ½-28 muzzle threads and an A2 flash hider installed.  Upper receiver has M4 feed ramps, as well as a detachable carry with rear sight.  Included complete bolt carrier group has a matte black phosphate finish, is chrome lined and is magnetic particle inspected. Mfg: Bushmaster Firearms Int.Llc. SPECS: Fits - AR-15 lower receivers.
  3. Ar-15 9mm Upper Receiver Assembly - A2 9mm Upper Receiver
    Item#:
    739-000-012  
    Our Price:
    $529.99
    Description:
    Easily Convert Your .223 AR Into A Fast-Shooting 9mm
  4. Sr-15 E3 Mod 2 Upper Receivers M-Lok - Ar-15 Upper Receiver Mod 2 16" Urx 4 M-Lok
    Item#:
    100-023-388  
    Our Price:
    $1,700.00
    Description:
    Knight’s Armament Company, or KAC, is known to many for their top tier, military issued rifles and parts. Brownells is proud to offer this line of Knight’s Armament SR-15 MOD 2 complete upper receivers that allow you to easily complete a build or upgrade a rifle with battle proven quality. Built around a chrome lined, cold hammer forged barrel in your choice of 11.5”, 14.5” 16” & 18” lengths with a Mod 2 gas block, and fitted with a KAC 3 prong QDC suppressor compatible flash hider. The Knight’s Armament SR-15 MOD 2 complete upper receivers feature the URX M-LOK handguards that each have 2 anti-rotation QD sling swivel sockets and ev Mfg: Knights Armament
  5. Sr-15 E3 Mod 2 Upper Receivers M-Lok - Ar-15 Upper Receiver Cqb Mod 2 11.5" Urx 4 M-Lok
    Item#:
    100-023-386  
    Our Price:
    $1,762.50
    Description:
    Knight’s Armament Company, or KAC, is known to many for their top tier, military issued rifles and parts. Brownells is proud to offer this line of Knight’s Armament SR-15 MOD 2 complete upper receivers that allow you to easily complete a build or upgrade a rifle with battle proven quality. Built around a chrome lined, cold hammer forged barrel in your choice of 11.5”, 14.5” 16” & 18” lengths with a Mod 2 gas block, and fitted with a KAC 3 prong QDC suppressor compatible flash hider. The Knight’s Armament SR-15 MOD 2 complete upper receivers feature the URX M-LOK handguards that each have 2 anti-rotation QD sling swivel sockets and ev Mfg: Knights Armament
  6. Sr-15 E3 Mod 2 Upper Receivers M-Lok - Ar-15 Upper Receiver Lpr Mod 2 18" Urx 4 M-Lok
    Item#:
    100-023-389  
    Our Price:
    $1,950.56
    Description:
    Knight’s Armament Company, or KAC, is known to many for their top tier, military issued rifles and parts. Brownells is proud to offer this line of Knight’s Armament SR-15 MOD 2 complete upper receivers that allow you to easily complete a build or upgrade a rifle with battle proven quality. Built around a chrome lined, cold hammer forged barrel in your choice of 11.5”, 14.5” 16” & 18” lengths with a Mod 2 gas block, and fitted with a KAC 3 prong QDC suppressor compatible flash hider. The Knight’s Armament SR-15 MOD 2 complete upper receivers feature the URX M-LOK handguards that each have 2 anti-rotation QD sling swivel sockets and ev Mfg: Knights Armament

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Ar 15 Left Hand Upper Receiver

Related Items
  1. Ar-15 Stripped A2 Upper Receiver - Stripped A2 Upper Receiver
    Item#:
    231-000-152  
    Our Price:
    $99.99
    Description:
    Fully machined and finished, military style uppers ready for you to install your choice of barrel, carrier, bolt, forearm, and lower to build a custom AR-15. A2 carry handle style, complete with cuts for mounting A2 rear sight. Features shell deflector, forward assist housing, and provisions for installing an ejection port cover. Precision machined from a premium-grade aluminum forging and hardcoat anodized for extra strength, with a tough, scratch-resistant Teflon coating. Does Not feature M4 Style Cuts. Mfg: Dpms SPECS: Aluminum, hard anodized, Teflon coated, matte black. Fits mil-spec AR-15 lower receiver with .250” pivot pins. Does Not feature M4 Style Cuts.
  2. Ar-15 Tsar-223 Upper Receiver - Tsar-223 Upper Receiver M-Lok
    Item#:
    100-023-887  
    Our Price:
    $1,150.00
    Description:
    The Tactical Solutions TSAR-223 Upper Receiver gives you the advantages of an AR-15 short-barreled rifle (SBR) without NFA paperwork. The bore length of the Tactical Solutions TSAR-223 Upper Receiver's barrel is 12", and the permanently attached SB-X shroud brings the overall length to an NFA-legal 16". A suppressor with an O.D. smaller than 1.75" easily fits inside the outer shroud and mounts on the threaded barrel of the Tactical Solutions TSAR-223 Upper Receiver. Suppressor NOT included Muzzle threads: ½"-28 tpi Shroud inside diameter is 1.75” Continuous Picatinny rail across top of receiver and handguard Lightwe Mfg: Tactical Solutions, Llc
  3. Ar-15/M16 Modular Upper Receiver - Mur Upper Receiver
    Item#:
    100-004-042  
    Our Price:
    $199.99
    Description:
    Extra Metal For Superb Strength & Rigidity; Mil-Spec Dimensions For Compatibility
  4. Ar-15 Flattop Upper Receiver - Stripped Flattop Upper Receiver
    Item#:
    274-000-019  
    Our Price:
    $60.99
    Description:
    M4/A3-style upper receiver is available stripped. Precision machined from a 7075 T6 aluminum alloy forging to USGI dimensions, and ready to mate with the mil-spec lower and internal components of your choice. Includes M4-type feed cuts and alphanumeric position markers stamped into the rail slots. Hardcoat anodized to resist wear, add strength, and protect from corrosion. Hard dry-lube surface treatment protects the anodizing from scuffs and reduces friction between bolt carrier and receiver walls for ultra-smooth operation, less wear, and longer service life. Mfg: D.S. Arms SPECS: 7075 T6 aluminum, hardcoat anodized, dry-lube finish, matte black. .250” takedown/pivot pin holes.
  5. 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
  6. Ar-15 Upper Receiver Assembly No Bcg - Ar-15 Upper Receiver Assembly No Bcg High Gas Block
    Item#:
    100-019-905  
    Our Price:
    $209.99
    List Price: $229.00
    Description:
    Complete AR-15 Upper Receiver Assembly less Bolt Carrier Group & Charging Handle.  Included Picatinny Gas Block is the same height as the receiver, to allow for use of back up iron sights.  Upper features an A2 flash hider, attached to a 16" M4 profile barrel with a 1-8 twist.  Barrel chambered in 5.56x45mm NATO features M4 feed ramps, 1/2-28 muzzle threads and a .750" diameter gas block journal.  Carbine length gas system allows for reliable function, and compatibility with a wide variety of aftermarket handguards & forends.  Included polymer handguards include a heat shield.  Forged aluminum 7075 T6 upper receiver includes ejection port co Mfg: Anderson Manufacturing

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Ammunition
  1. Core-Lokt Ammo 243 Winchester 100gr Pointed Sp - 243 Winchester 100gr Pointed Soft Point 20/Box
    Item#:
    105-202-022  
    Our Price:
    $21.99
    Description:
    Premium Ultra Mag For Serious Hunters There’s probably been more big game shot with Remington Core-Lokts than any other ammunition. For more than six decades, it has remained the leader in centerfire hunting ammunition. One of the first controlled-expansion bullet designs, it’s still one of the most effective ever developed. Its progressively tapered copper jacket is locked to a solid lead core for perfectly controlled expansion and high weight retention. The Pointed Soft Point Core-Lokt (PSPCL) style has a Spitzer-shaped profile for improved velocity and flat trajectory. Mfg: Remington
  2. Core-Lokt Ammo 25-06 Remington 100gr Pointed Sp - 25-06 Remington 100gr Pointed Soft Point 20/Box
    Item#:
    105-202-023  
    Our Price:
    $29.99
    Description:
    Premium Ultra Mag For Serious Hunters There’s probably been more big game shot with Remington Core-Lokts than any other ammunition. For more than six decades, it has remained the leader in centerfire hunting ammunition. One of the first controlled-expansion bullet designs, it’s still one of the most effective ever developed. Its progressively tapered copper jacket is locked to a solid lead core for perfectly controlled expansion and high weight retention. The Pointed Soft Point Core-Lokt (PSPCL) style has a Spitzer-shaped profile for improved velocity and flat trajectory. Mfg: Remington
  3. Core-Lokt Ammo 25-06 Remington 120gr Pointed Sp - 25-06 Remington 120gr Pointed Soft Point 20/Box
    Item#:
    105-202-024  
    Our Price:
    $32.99
    Description:
    Premium Ultra Mag For Serious Hunters There’s probably been more big game shot with Remington Core-Lokts than any other ammunition. For more than six decades, it has remained the leader in centerfire hunting ammunition. One of the first controlled-expansion bullet designs, it’s still one of the most effective ever developed. Its progressively tapered copper jacket is locked to a solid lead core for perfectly controlled expansion and high weight retention. The Pointed Soft Point Core-Lokt (PSPCL) style has a Spitzer-shaped profile for improved velocity and flat trajectory. Mfg: Remington
  4. Core-Lokt Ammo 260 Remington 140gr Pointed Sp - 260 Remington 140gr Pointed Soft Point 20/Box
    Item#:
    105-202-029  
    Our Price:
    $37.99
    Description:
    Premium Ultra Mag For Serious Hunters There’s probably been more big game shot with Remington Core-Lokts than any other ammunition. For more than six decades, it has remained the leader in centerfire hunting ammunition. One of the first controlled-expansion bullet designs, it’s still one of the most effective ever developed. Its progressively tapered copper jacket is locked to a solid lead core for perfectly controlled expansion and high weight retention. The Pointed Soft Point Core-Lokt (PSPCL) style has a Spitzer-shaped profile for improved velocity and flat trajectory. Mfg: Remington
  5. Core-Lokt Ammo 270 Winchester 130gr Pointed Sp - 270 Winchester 130gr Pointed Soft Point 20/Box
    Item#:
    105-202-032  
    Our Price:
    $22.49
    Description:
    Premium Ultra Mag For Serious Hunters There’s probably been more big game shot with Remington Core-Lokts than any other ammunition. For more than six decades, it has remained the leader in centerfire hunting ammunition. One of the first controlled-expansion bullet designs, it’s still one of the most effective ever developed. Its progressively tapered copper jacket is locked to a solid lead core for perfectly controlled expansion and high weight retention. The Pointed Soft Point Core-Lokt (PSPCL) style has a Spitzer-shaped profile for improved velocity and flat trajectory. Mfg: Remington
  6. High Velocity Ammo 22 Long Rifle 40gr Copper Plated Round Nose - 22 Long Rifle 40gr Copper Plated Ro
    Item#:
    105-000-302  
    Our Price:
    $39.99
    List Price: $59.99
    Description:
    Rimfire cartridges made by CI of Mexico. High velocity with non-corosive primers and smokeless powder. Brass cased and copper plated bullets. Each brick contains 500 rounds of rimfire ammuntion, 10 Individual 50 round boxes. Mfg: Ci Ammunition

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Price shopping for Ar 15 Upper? Look no further than Brownells.com for the best prices and selection. Here you'll find 199 Ar 15 Upper and Ar 15 Left Hand Upper Receiver, the best selection online, ranging in price from $2.99 to $4,195.00. 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're so confident in our selection of Ar 15 Upper, we make you a promise. Our 100% satisfaction guarantee means if you're not completely happy with your purchase, we'll do everything we can to make it right. So check out our complete selection of Ar 15 Upper and place your order online or by calling us toll free at 1-800-741-0015. Customer service associates are standing by to answer your questions about our gun parts and gunsmith tools. We're here to help!