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Upper Builds by Caliber

Top Sellers

Omega Mfg. Rear Beavertail grip, Rubberized Coating
Omega Mfg. Rear Beavertail grip, Rubberized Coating
$429.99 $324.99
MMC 'Ammophilia V2' 16-inch AR-15 5.56 NATO Nitride Rifle Full Build Kit
MMC 'Ammophilia V2' 16-inch AR-15 5.56 NATO Nitride Rifle Full Build Kit
$329.99 $244.99
Davidson Defense Jungle Flame 10.5-inch AR-15 5.56 NATO Pistol Upper Build Kit
Davidson Defense Jungle Flame 10.5-inch AR-15 5.56 NATO Pistol Upper Build Kit
$174.99 $129.99
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)
$149.99 $114.99
Davidson Defense Buck Wylde 16-inch AR-15 .223 Wylde Rifle Full Build Kit
Davidson Defense Buck Wylde 16-inch AR-15 .223 Wylde Rifle Full Build Kit
$299.99 $224.99
Davidson Defense Dragon’s Bane 16-inch AR-15 5.56 NATO Rifle Full Build Kit
Davidson Defense Dragon’s Bane 16-inch AR-15 5.56 NATO Rifle Full Build Kit
$339.99 $254.99
Davidson Defense Shadow Protocol 16-inch AR-15 5.56 NATO Rifle Full Build Kit
Davidson Defense Shadow Protocol 16-inch AR-15 5.56 NATO Rifle Full Build Kit
$324.99 $244.99
Davidson Defense Aegis 16-inch Carbine-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Rifle Full Build Kit
Davidson Defense Aegis 16-inch Carbine-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Rifle Full Build Kit
$324.99 $244.99
Davidson Defense ECHO-XVIII 18-inch LR-308 .308 Win Rifle Full Build Kit
Davidson Defense ECHO-XVIII 18-inch LR-308 .308 Win Rifle Full Build Kit
$509.99 $384.99
Davidson Defense Spartan Zero 7.5-inch AR-15 5.56 NATO Pistol Upper Build Kit
Davidson Defense Spartan Zero 7.5-inch AR-15 5.56 NATO Pistol Upper Build Kit
$164.99 $124.99
Davidson Defense Helcaraxe 16-inch AR-15 .300 BLK Rifle Full Build Kit
Davidson Defense Helcaraxe 16-inch AR-15 .300 BLK Rifle Full Build Kit
$329.99 $249.99
Davidson Defense Poker Ace 10.5-inch AR-15 .300 BLK Pistol Complete Upper
Davidson Defense Poker Ace 10.5-inch AR-15 .300 BLK Pistol Complete Upper
$269.99 $204.99
Davidson Defense Shadow Skirmisher 10.5-inch AR-15 .300 BLK Pistol Complete Upper
Davidson Defense Shadow Skirmisher 10.5-inch AR-15 .300 BLK Pistol Complete Upper
$264.99 $199.99
Davidson Defense Aegis 7.5-inch Pistol-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Complete Upper Build
Davidson Defense Aegis 7.5-inch Pistol-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Complete Upper Build
$244.99 $184.99
Davidson Defense Aegis w/Gauntlet Arms Brace 8.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat M-Lok Handguard Pistol Full Build Kit, Suppressor Ready
Davidson Defense Aegis w/Gauntlet Arms Brace 8.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat M-Lok Handguard Pistol Full Build Kit, Suppressor Ready
$304.99 $229.99
Davidson Defense Ormal 16-inch AR-15 .300 BLK Rifle Upper Build Kit
Davidson Defense Ormal 16-inch AR-15 .300 BLK Rifle Upper Build Kit
$189.99 $144.99

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  • .300 Blackout AR-15 Upper Builds .300 Blackout AR-15 Upper Builds
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  • 6.5 Creedmoor LR-308/AR-10 Upper Builds 6.5 Creedmoor LR-308/AR-10 Upper Builds

Products [850]

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MMC Arms
MMC Arms"Muse" Ar-15 Featuring Davidson Defense Upper Receiver 16" 9mm 1-10T QPQ Nitride Barrel KeyMod Handguard
$339.99 $254.99 Sale
In Stock
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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
Out of Stock
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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
$429.99 $324.99 Sale
In Stock
Add To Cart
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
Out of Stock
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MMC Arms
MMC Arms "Solidus" LR-308 Featuring Aero Precision M5 Upper 24" Ultra-Match 6.5 Creedmoor Stainless 1-8T Straight Fluted Heavy Bull Barrel 19" M-Lok Handguard (Assembled or Unassembled)
$609.99 $459.99 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
Out of Stock
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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
Out of Stock
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Davidson Defense
Davidson Defense "Zero Motivation" AR-15 Pistol Upper Receiver 7.5" 5.56 NATO 416R Stainless 1-7T Barrel 7" Smooth Tube Handguard (Assembled or Unassembled)
$164.99 $124.99 Sale
In Stock
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Davidson Defense
Davidson Defense "Hermits" AR-15 Pistol Upper Receiver 7.5" .300 Blackout 4150 CMV 1-8T Heavy Barrel 7" Smooth Tube Handguard (Assembled or Unassembled)
$159.99 $119.99 Sale
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Davidson Defense
Davidson Defense "Scrooge" AR-15 Pistol Upper Receiver 8" 7.62x39 4150 CMV QPQ Nitride 1-10T Heavy Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$344.99 $259.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Slaw" AR-15 Pistol Upper Receiver 8" 7.62x39 4150 CMV QPQ Nitride 1-10T Heavy Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$279.99 $209.99 Sale
Out of Stock
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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
Out of Stock
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Davidson Defense
Davidson Defense "Savana" AR-15 Upper Receiver 20" .350 Legend 4150 CMV 1-16T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$409.99 $309.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Disaster" AR-15 Pistol Upper Receiver 8.5" .300 Blackout 4150 CMV QPQ Nitride 1-8T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$339.99 $254.99 Sale
Out of Stock
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MMC Arms
MMC Arms "Ange" LR-308 Featuring Aero Precision M5 Upper 10.5" .308 WIN 4150 CMV QPQ Nitride Heavy Barrel 12" M-Lok Handguard (Assembled or Unassembled)
$314.99 $239.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Sounder" AR-15 Pistol Upper Receiver 8" 9MM 4150 CMV QPQ Nitride 1-10T KAK Industries Barrel 7" KeyMod Handguard (Assembled or Unassembled)
$139.99 $104.99 Sale
Out of Stock
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MMC Arms
MMC Arms "Clack Clack" AR-15 Featuring Aero Precision Upper Receiver 16" .458 SOCOM 4150 CMV 1-14T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$369.99 $279.99 Sale
Out of Stock
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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
Out of Stock
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Davidson Defense 'Anthea' 7.5
Davidson Defense 'Anthea' 7.5" AR-15 .300 Blackout Manganese Phosphate Pistol Upper Build Kit
$184.99 $139.99 Sale
In Stock
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1 2 3 4 5 6 7 ...36 Next Page View All
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