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  M4E1 15″ ATLAS S-ONE M-LOK Complete Upper, 16″ 5.56 HBAR CMV Mid-Length Barrel – Anodized Black

  $509.99 Read more
• 

  M4E1 15″ Enhanced M-LOK Complete Upper, 16″ 5.56 HBAR CMV Mid-Length Barrel – Anodized Black

  $514.99 Add to cart
• 

  M4E1 Assembled Threaded Upper Receiver, Special Edition: Thunder Ranch – FDE Cerakote

  $159.99 Read more
• 

  M4E1 Barrel Nut Wrench

  $5.49 Add to cart
• 

  M4E1 Enhanced 10.5″ 5.56 Barrel Complete Upper Receiver

  $467.99 – $494.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Enhanced 10.5″ 5.56 Barrel Quantum Handguard Complete Upper Receiver

  $424.99 – $454.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Enhanced 10.5″ 5.56 Complete Upper Receiver w/ Pinned FSB

  $494.99 – $519.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Enhanced 10.5″ 5.56 No Forward Assist Complete Upper Receiver w/ 9″ M-LOK Handguard

  $464.99 – $489.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Enhanced 10″ .300 Blackout Complete Upper Receiver

  $489.99 – $514.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Enhanced 14.5″ 5.56 Mid-Length Complete Upper Receiver

  $504.99 – $529.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Enhanced 16″ .223 Wylde SS QPQ Complete Upper Receiver

  $539.99 – $564.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Enhanced 16″ .300 Blackout Complete Upper Receiver

  $499.99 – $689.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Enhanced 16″ .300 Blackout Quantum Handguard Complete Upper Receiver

  $474.99 – $519.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Enhanced 16″ 5.56 M4 CMV Carbine Barrel Complete Upper Receiver

  $504.99 – $539.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Enhanced 16″ 5.56 Mid-Length Barrel Quantum Handguard Complete Upper Receiver

  $464.99 – $509.99 Select options This product has multiple variants. The options may be chosen on the product page
• 

  M4E1 Enhanced 16″ 5.56 Mid-Length Complete Upper Receiver

  $509.99 – $544.99 Select options This product has multiple variants. The options may be chosen on the product page