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Rifle Upper Build Kits

Top Sellers

Omega Mfg. Rear Beavertail grip, Rubberized Coating
Omega Mfg. Rear Beavertail grip, Rubberized Coating
$9.99 $3.99
Davidson Defense 'Hot Hand Mid-Length' MMC Exclusive 16.5-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit (Handguard Ready)
Davidson Defense 'Hot Hand Mid-Length' MMC Exclusive 16.5-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit (Handguard Ready)
$154.99 $114.99
MMC 'Reid V2' 16-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit
MMC 'Reid V2' 16-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit
$219.99 $164.99
Davidson Defense 'Acquaintance' 16-inch AR-15 7.62x39 Phosphate Rifle Upper Build Kit
Davidson Defense 'Acquaintance' 16-inch AR-15 7.62x39 Phosphate Rifle Upper Build Kit
$204.99 $154.99

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  • .223 Rem > Rifle Length > AR-15 Upper Build Kits

Products [114]

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Davidson Defense
Davidson Defense"Stagecoach" AR-15 Upper Receiver 16" .223 Wylde 4150 CMV 1-8T Barrel 15" KeyMod Handguard (Assembled or Unassembled)
$179.99 $134.99 Sale
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MMC Customs
MMC Customs"Scorcher" AR-15 Featuring Aero Precision Upper Receiver 18" Ultra-Match 6.5 Grendel 1-8T Stainless Heavy Barrel 15" KeyMod Handguard (Assembled or Unassembled)
$289.99 $219.99 Sale
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Glock OEM Firing Pin Chanel Liner
Glock OEM Firing Pin Chanel Liner
$414.99 $309.99 Sale
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Glock Slide Lock Spring 569501 / 100-002-737 GLSP05446-25
Glock Slide Lock Spring 569501 / 100-002-737 GLSP05446-25
$209.99 $159.99 Sale
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Omega Mfg. Rear Beavertail grip, Rubberized Coating
Omega Mfg. Rear Beavertail grip, Rubberized Coating
$9.99 $3.99 Sale
In Stock
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MMC Arms
MMC Arms"Fiery Furnace" AR-15 Featuring Aero Precision Upper Receiver 16" .450 Bushmaster 1-24T 4150 CMV Heavy Barrel 15" KeyMod Handguard (Assembled or Unassembled)
$339.99 $254.99 Sale
Out of Stock
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MMC Arms
MMC Arms"Butch" AR-15 Featuring Aero Precision Upper Receiver 18" Ultra-Match .450 Bushmaster 1-24T 4150 CMV Heavy Barrel 16.5" M-Lok Handguard (Assembled or Unassembled)
$239.99 $179.99 Sale
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MMC Arms
MMC Arms "Code Blue" LR-308 Featuring Aero Precision M5 Upper 24" Ultra-Match .308 WIN Stainless 1-10T Straight Fluted Heavy Bull Barrel 19" M-Lok Handguard (Assembled or Unassembled)
$414.99 $309.99 Sale
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MMC Arms
MMC Arms "Solidago" AR-15 Featuring Aero Precision Upper Receiver 16" .458 SOCOM 1-14T 4150 CMV Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$299.99 $224.99 Sale
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MMC Arms
MMC Arms "Loon" LR-308 Featuring Aero Precision M5 Upper 22" 6.5 Creedmoor 4150 CMV QPQ Nitride 1-8T Barrel 16.5" M-Lok Handguard (Assembled or Unassembled)
$459.99 $344.99 Sale
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Davidson Defense
Davidson Defense "Forsaken" AR-15 Upper Receiver 18" .350 Legend 4150 CMV 1-16T Heavy Barrel 13.5" M-Lok Handguard (Assembled or Unassembled)
$219.99 $164.99 Sale
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Davidson Defense
Davidson Defense "Coble" AR-15 Upper Receiver 20" .350 Legend 4150 CMV 1-16T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$279.99 $209.99 Sale
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MMC Arms
MMC Arms "Ladon" LR-308 Featuring Aero Precision M5 Upper 18" 6.5 Creedmoor 416R Stainless 1-8T Straight Fluted Heavy Barrel 16" M-Lok Handguard (Assembled or Unassembled)
$409.99 $309.99 Sale
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MMC Arms
MMC Arms "Bunting" LR-308 Featuring Aero Precision M5 Upper 18" 6.5 Creedmoor 416R Stainless 1-8T Straight Fluted Heavy Barrel 16" M-Lok Handguard (Assembled or Unassembled)
$409.99 $309.99 Sale
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MMC Arms Top Shelf
MMC Arms Top Shelf "Lynx" AR-15 Featuring Davidson Defense Upper Receiver 18" Faxon Firearms 5.56 NATO 4150 CMV QPQ Nitride 1-8T Barrel 17.5" KeyMod ODIN Works Handguard (Assembled or Unassembled)
$424.99 $319.99 Sale
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Davidson Defense
Davidson Defense "Moroder" AR-15 Upper Receiver 20" 6.5 Grendel 416R Stainless 1-8T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$254.99 $189.99 Sale
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Davidson Defense
Davidson Defense "Untouchable" AR-15 Upper Receiver 18" .350 Legend 4150 CMV 1-16T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$204.99 $154.99 Sale
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Davidson Defense 'Mercs' 16
Davidson Defense 'Mercs' 16" AR-15 .300 Blackout Manganese Phosphate Upper Build Kit
$214.99 $164.99 Sale
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Davidson Defense
Davidson Defense "Blade Eagle" AR-15 Upper Receiver 24" 5.56 NATO 416R Stainless 1-9T Target Crowned Bull Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$214.99 $159.99 Sale
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MMC Arms
MMC Arms "Sesto" LR-308 Featuring A Davidson Defense DPMS Style Upper Receiver 22" 6.5 Creedmoor 4150 CMV QPQ Nitride Straight Fluted Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$329.99 $249.99 Sale
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Davidson Defense
Davidson Defense "Buzz!" AR-15 Upper Receiver 18" .450 Bushmaster 4150 CMV 1-24T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$254.99 $194.99 Sale
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Davidson Defense
Davidson Defense "Joust" Side Charging AR-15 Upper Receiver 20" 5.56 NATO 416R Stainless 1-9T Target Crowned Bull Barrel 15" KeyMod Handguard (Assembled or Unassembled)
$379.99 $289.99 Sale
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Davidson Defense
Davidson Defense "Themis" AR-15 Upper Receiver 24" 5.56 NATO 416R Stainless 1-9T Target Crowned Bull Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$209.99 $159.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Iolite" AR-15 Upper Receiver 16" .350 Legend 4150 CMV 1-16T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$249.99 $189.99 Sale
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