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Ar 15 Upper Receivers

Best Sellers
  1. 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
  2. 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
  3. 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
  4. Sr-15 E3 Mod 2 Upper Receivers M-Lok - Ar-15 Upper Receiver Carbine Mod 2 14.5" Urx 4 M-Lok
    Item#:
    100-023-387  
    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
  5. Ar-15 .22lr M4 & Lightweight Upper Receivers - Ar-22 M4 Upper Receiver
    Item#:
    100-005-202  
    Our Price:
    $579.99
    Description:
    Complete, Dedicated .22 LR Upper Ready To Drop On Your Lower & Shoot
  6. 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

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Colt Ar 15 Upper Receivers

Related Items
  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. Ar6951 Upper Receiver, Flattop Smg 9mm
    Item#:
    160-308-290  
    Our Price:
    $159.99
    Description:
    AR6951 UPPER RECEIVER, FLATTOP SMG 9MM Mfg: Colt
  3. Ar15a4 Upper Rcvr, Flattop, Mod. Carb
    Item#:
    160-308-268  
    Our Price:
    $143.99
    Description:
    AR15A4 UPPER RCVR, FLATTOP, MOD. CARB Mfg: Colt

Ammunition
  1. Black Hills Gold Ammo 300 Winchester Magnum 165gr Gmx - 300 Winchester Magnum 165gr Gmx 20/Box
    Item#:
    105-001-554  
    Our Price:
    $65.37
    Description:
     Black Hills Gold 300 Winchester Magnum 165gr GMX Ammunition is handcrafted from the finest components, put through the ringer by the bunch back in inspection, and tested rigorously in ballistics. In layman's terms, there's nothing typical about it. Reloadable brass cases, boxer primed and hand inspected before it leaves the facility. Mfg: Black Hills Ammunition
  2. Black Hills Gold Ammo 300 Winchester Magnum 165gr Gmx - 300 Winchester Magnum 165gr Gmx 100/Case
    Item#:
    105-001-555  
    Our Price:
    $311.72
    Description:
     Black Hills Gold 300 Winchester Magnum 165gr GMX Ammunition is handcrafted from the finest components, put through the ringer by the bunch back in inspection, and tested rigorously in ballistics. In layman's terms, there's nothing typical about it. Reloadable brass cases, boxer primed and hand inspected before it leaves the facility. Mfg: Black Hills Ammunition
  3. Self Defense Ammo 40 S&W 140gr Schp - 40 S&W 140gr Solid Copper Hollow Point 20/Box
    Item#:
    105-000-471  
    Our Price:
    $27.99
    Description:
    TNQ Self Defense rounds are precision engineered, solid copper bullets built with top end terminal ballistics to provide optimal performance. Utilizing the highest quality brass and filled with precisely metered, clean burning powder, TNQ rounds provide reliable, maximum expansion with complete weight retention while maintaining standard chamber pressures. Mfg: Team Never Quit
  4. Self Defense Ammo 10mm Auto 155gr Schp - 10mm Auto 155gr Solid Copper Hollow Point 20/Box
    Item#:
    105-000-472  
    Our Price:
    $28.99
    Description:
    TNQ Self Defense rounds are precision engineered, solid copper bullets built with top end terminal ballistics to provide optimal performance. Utilizing the highest quality brass and filled with precisely metered, clean burning powder, TNQ rounds provide reliable, maximum expansion with complete weight retention while maintaining standard chamber pressures. Mfg: Team Never Quit
  5. Speed-Shok Ammo 12 Gauge 3" 1-1/8 Oz #bb Shot - 12 Gauge 3" 1-1/8 Oz #bb Shot 25/Box
    Item#:
    105-200-918  
    Our Price:
    $14.79
    Description:
    Hard-Hitting Performance & Accuracy Designed to offer performance and accuracy, Speed-Shok shells feature exceptionally uniform steel shot driven at impressive velocities for tight patterns and plenty of knock-down power to bring down the game, even at long range. The high-density plastic wad has a high-efficiency gas-sealing flange for maximum efficiency to further ensure tight patterns. High output primers provide consistent ignition and dependability, even in cold, wet weather. Available in a variety of buckshot and birshot loads. 25 shells per box. Mfg: Federal
  6. Wing-Shok Ammo 20 Gauge 2-3/4" 1 Oz #6 Shot - 20 Gauge 2-3/4" 1 Oz #6 Shot 25/Box
    Item#:
    105-200-710  
    Our Price:
    $19.99
    Description:
    The Game Is On With This Quality Shot For Upland Bird Hunting 25 per box 20-gauge, 2 3/4-inch shells Wing-Shok line Bring down your bird of choice with the quality and accuracy of Federal Ammo Wing-Shok High Velocity shells. Ideal for upland bird hunting such as grouse, chuker, quail and other fowl, this shot offers a high muzzle velocity and is part of the Wing-Shok line. Mfg: Federal

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So, you're looking for Ar 15 Upper Receivers? Brownells.com carries the widest selection at the best prices on the web. Here, you'll find 107 Ar 15 Upper Receivers and Colt Ar 15 Upper Receivers, the best available, at prices from $54.99 to $4,195.00. Our excellent selection of gun parts and gunsmith tools, along with our unwavering commitment to the best prices and customer service, has made us the number one online retailer in the industry. We know you'll find our Ar 15 Upper Receivers to be everything you expect, so we're proud to offer a 100% satisfaction guarantee. If you're not completely satisfied with your purchase, we'll make it right; whatever it takes. So check out our complete selection of Ar 15 Upper Receivers and place your order online or by calling us toll free at 1-800-741-0015. We're passionate about meeting all your needs for gun parts and gunsmith tools, and we're confident you'll find what you need here. If you have any questions, don't hesitate to give us a call!