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  1. Home
  2. AR-15 & AR-10 Build Kits
  3. Upper Builds by Caliber

Upper Builds by Caliber

Davidson Defense has options to suit all of the most popular calibers. If you're looking to try a new round or starting a brand new build, these are great options at awesome prices to get you started.


Top Sellers

Davidson Defense 8.5
Davidson Defense 8.5" 5.56 NATO AR-15 Pistol Upper Receiver: Avagaum, 4150 CMV 1:7, 7" M-LOK Handguard
$159.99 Original price $119.99
Fennek 5.56 NATO AR-15 Upper – Rifle-Caliber Upper for Your Next AR Build
Fennek 5.56 NATO AR-15 Upper – Rifle-Caliber Upper for Your Next AR Build
$359.99 Original price $274.99
Davidson Defense Medusa's Fury 7.5-inch Pistol-Gas 1:7 5.56 NATO AR-15 Freefloat Tubular Handguard Pistol Assembled Upper Receiver
Davidson Defense Medusa's Fury 7.5-inch Pistol-Gas 1:7 5.56 NATO AR-15 Freefloat Tubular Handguard Pistol Assembled Upper Receiver
$151.99 Original price $114.99
Davidson Defense Silver Fang 7.5
Davidson Defense Silver Fang 7.5" 5.56 NATO AR-15 Pistol Upper Receiver, Pistol-Gas, 1:7 Twist
$158.99 Original price $119.99
Davidson Defense Silver Fang 7.5-inch Pistol-Gas 1:7 5.56 NATO AR-15 Tubular Pistol Complete Upper Build
Davidson Defense Silver Fang 7.5-inch Pistol-Gas 1:7 5.56 NATO AR-15 Tubular Pistol Complete Upper Build
$171.99 Original price $129.99
Davidson Defense Aegis 8.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit, Suppressor Ready
Davidson Defense Aegis 8.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit, Suppressor Ready
$174.99 Original price $129.99
Davidson Defense Davidson Defense 'Avalanche' 16-inch AR-15 5.56 NATO Nitride Rifle Full Build Kit
Davidson Defense Davidson Defense 'Avalanche' 16-inch AR-15 5.56 NATO Nitride Rifle Full Build Kit
$349.99 Original price $264.99
Davidson Defense Davidson Defense 'Full House' 10.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
Davidson Defense Davidson Defense 'Full House' 10.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
$174.99 Original price $134.99
Davidson Defense Aegis Lightweight 10.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit
Davidson Defense Aegis Lightweight 10.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit
$184.99 Original price $139.99
Davidson Defense Aegis Lightweight 16
Davidson Defense Aegis Lightweight 16" AR-15 5.56 NATO Rifle Build Kit, Carbine-Gas, M-LOK Rail
$354.99 Original price $264.99
Davidson Defense Attuned 10.5-inch Carbine-Gas 1:7 5.56 NATO AR-15 Freefloat Quad-Rail Handguard Pistol Upper Build Kit
Davidson Defense Attuned 10.5-inch Carbine-Gas 1:7 5.56 NATO AR-15 Freefloat Quad-Rail Handguard Pistol Upper Build Kit
$179.99 Original price $134.99
Davidson Defense Left-Handed Aegis 7.5-inch Pistol-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit
Davidson Defense Left-Handed Aegis 7.5-inch Pistol-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit
$174.99 Original price $129.99

New Releases

FDE NO-LOGO DELTA-9 AR-9 Rifle Lower Build Kit, M4-Style Adjustable Carbine Stock
FDE NO-LOGO DELTA-9 AR-9 Rifle Lower Build Kit, M4-Style Adjustable Carbine Stock
$184.99 Original price $139.99
Stiffler MFG Blemished G19 Compatible Turbo Slide, Tungsten Cerakote, Stripped, RMR Cut with Cover Plate
Stiffler MFG Blemished G19 Compatible Turbo Slide, Tungsten Cerakote, Stripped, RMR Cut with Cover Plate
$164.99 Original price $124.99
Stiffler MFG Blemished G19 Compatible Turbo Slide, Gold Cerakote, Stripped, RMR Cut with Cover Plate
Stiffler MFG Blemished G19 Compatible Turbo Slide, Gold Cerakote, Stripped, RMR Cut with Cover Plate
$171.99 Original price $129.99
Stiffler MFG Blemished G17 Gen 1-3 Compatible Zoom Slide, RMR Cut with Cover Plate, Sniper Gray Cerakote
Stiffler MFG Blemished G17 Gen 1-3 Compatible Zoom Slide, RMR Cut with Cover Plate, Sniper Gray Cerakote
$164.99 Original price $124.99
Upper Builds by Caliber subcategories
  • .223 Rem AR-15 Upper Builds
  • 12.7x42 Upper Builds
  • 22LR AR-15 Upper Builds
  • 8.6 Blackout AR-15 Upper Builds
  • 5.56 NATO AR-15 Upper Builds
  • .22LR AR-15 Upper Builds
  • .223 Wylde AR-15 Upper Builds
  • 6MM ARC AR-15 Upper Builds
  • 6.5 Creedmoor LR-308/AR-10 Upper Builds
  • 6.5 Grendel AR-15 Upper Builds
  • 7.62x39 AR-15 Upper Builds
  • .300 Blackout AR-15 Upper Builds
  • .308 Winchester LR-308/AR-10 Upper Builds
  • 8.6 Blackout LR-308/AR-10 Upper Builds
  • .350 Legend AR-15 Upper Builds
  • 9mm AR-15 Upper Builds
  • 10MM AR-15 Upper Builds
  • .45 ACP AR-15 Upper Builds
  • .450 Bushmaster AR-15 Upper Builds
  • .458 SOCOM AR-15 Upper Builds
  • 12.7x42 AR-15 Upper Builds

Products [2309]

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ELITE AR-15 Geissele MK8 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
ELITE AR-15 Geissele MK8 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
$639.99 $479.99 Sale
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ELITE AR-15 with Timber Creek Greyman Handguard 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
ELITE AR-15 with Timber Creek Greyman Handguard 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
$514.99 $389.99 Sale
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ELITE AR-15 with Timber Creek Enforcer Handguard 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
ELITE AR-15 with Timber Creek Enforcer Handguard 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
$484.99 $364.99 Sale
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ELITE AR-15 with Timber Creek Ultra Lite Enforcer Handguard 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
ELITE AR-15 with Timber Creek Ultra Lite Enforcer Handguard 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
$484.99 $364.99 Sale
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ELITE AR-15 with Timber Creek Enforcer 13-inch Handguard 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
ELITE AR-15 with Timber Creek Enforcer 13-inch Handguard 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
$449.99 $339.99 Sale
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ELITE AR-15 with Kaw Valley Konza Handguard 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
ELITE AR-15 with Kaw Valley Konza Handguard 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
$414.99 $314.99 Sale
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ELITE AR-15 with ODIN Works Forend Handguard 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
ELITE AR-15 with ODIN Works Forend Handguard 16.5-inch 5.56 NATO Nitride Rifle Complete Upper Build with X2 Dev Group Jackal X Charging Handle
$359.99 $269.99 Sale
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Customs 'Mockingbird Gen 2' 9MM Upper Build Kit
Customs 'Mockingbird Gen 2' 9MM Upper Build Kit
$154.99 $114.99 Sale
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DTT 'Mockingbird Gen 2' 6-inch AR-15 9mm Nitride Pistol Complete Upper Build Kit
DTT 'Mockingbird Gen 2' 6-inch AR-15 9mm Nitride Pistol Complete Upper Build Kit
$249.99 $189.99 Sale
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Customs Davidson Defense AR15 'Mockingbird Gen 2' 9MM Full Build Kit
Customs Davidson Defense AR15 'Mockingbird Gen 2' 9MM Full Build Kit
$409.99 $309.99 Sale
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Customs Davidson Defense AR15 'Mockingbird Gen 2' 9MM Full Build Kit
Customs Davidson Defense AR15 'Mockingbird Gen 2' 9MM Full Build Kit
$344.99 $259.99 Sale
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Customs Davidson Defense AR15 Mockingbird Gen 2 w/ MVR 9mm Full Kit w/ SBA3
Customs Davidson Defense AR15 Mockingbird Gen 2 w/ MVR 9mm Full Kit w/ SBA3
$434.99 $329.99 Sale
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Customs Davidson Defense AR15 Mockingbird Gen 2 w/ MVR 9mm Full Kit w/ KAK
Customs Davidson Defense AR15 Mockingbird Gen 2 w/ MVR 9mm Full Kit w/ KAK
$374.99 $279.99 Sale
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DTT 'Mockingbird Gen 2 w/ MVR' 6-inch AR-15 9mm Nitride Pistol Complete Upper Build Kit
DTT 'Mockingbird Gen 2 w/ MVR' 6-inch AR-15 9mm Nitride Pistol Complete Upper Build Kit
$279.99 $209.99 Sale
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Customs Mockingbird Gen 2 w/ MVR 9mm Upper Build Kit
Customs Mockingbird Gen 2 w/ MVR 9mm Upper Build Kit
$179.99 $134.99 Sale
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Davidson Defense 'Mockingbird Gen 3' 9MM Upper Build Kit
Davidson Defense 'Mockingbird Gen 3' 9MM Upper Build Kit
$171.99 $129.99 Sale
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Davidson Defense 'Mockingbird Gen 3' 9MM Complete Upper Build Kit
Davidson Defense 'Mockingbird Gen 3' 9MM Complete Upper Build Kit
$269.99 $204.99 Sale
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Davidson Defense 'Mockingbird Gen 3' 6-inch AR-15 9mm Nitride Pistol Full Build Kit
Davidson Defense 'Mockingbird Gen 3' 6-inch AR-15 9mm Nitride Pistol Full Build Kit
$424.99 $319.99 Sale
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Davidson Defense 'Mockingbird Gen 3' 6-inch AR-15 9mm Nitride Pistol Full Build Kit
Davidson Defense 'Mockingbird Gen 3' 6-inch AR-15 9mm Nitride Pistol Full Build Kit
$364.99 $274.99 Sale
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Davidson Defense 'Mockingbird Gen 3 w/ MVR' 6-inch AR-15 9mm Nitride Pistol Full Build Kit
Davidson Defense 'Mockingbird Gen 3 w/ MVR' 6-inch AR-15 9mm Nitride Pistol Full Build Kit
$454.99 $344.99 Sale
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Davidson Defense 'Mockingbird Gen 3 w/ MVR' 6-inch AR-15 9mm Nitride Pistol Full Build Kit
Davidson Defense 'Mockingbird Gen 3 w/ MVR' 6-inch AR-15 9mm Nitride Pistol Full Build Kit
$389.99 $294.99 Sale
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Davidson Defense 'Mockingbird Gen 3 w/ MVR' 6-inch AR-15 9mm Nitride Pistol Complete Upper Build Kit
Davidson Defense 'Mockingbird Gen 3 w/ MVR' 6-inch AR-15 9mm Nitride Pistol Complete Upper Build Kit
$299.99 $224.99 Sale
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Davidson Defense Mockingbird Gen 3 w/ MVR 9mm Upper Build Kit
Davidson Defense Mockingbird Gen 3 w/ MVR 9mm Upper Build Kit
$199.99 $149.99 Sale
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Davidson Defense 'Griffin' 8.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
Davidson Defense 'Griffin' 8.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit "
$189.99 $144.99 Sale
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782 S Auto Mall Dr American Fork UT 84003
United States Of America
833-496-6401

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