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  M4E1 Threaded 18″ .223 Wylde SS QPQ Complete Upper Receiver w/ 15″ M-LOK ATLAS R-ONE Handguard

  $459.99 – $574.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Threaded 18″ .223 Wylde SS QPQ Complete Upper Receiver w/ 15″ M-LOK ATLAS S-ONE Handguard

  $549.99 – $574.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Threaded 18″ 5.56 Complete Upper Receiver w/ ATLAS R-ONE Handguard

  $519.99 – $544.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Threaded 18″ 5.56 Complete Upper Receiver w/ ATLAS S-ONE Handguard

  $519.99 – $544.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Threaded 20″ 5.56 Complete Upper Receiver w/ ATLAS S-ONE Handguard

  $524.99 – $554.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Threaded 7.5″ 5.56 Complete Upper Receiver w/ 7″ M-LOK ATLAS R-ONE Handguard

  $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 Threaded 7.5″ 5.56 Complete Upper Receiver w/ ATLAS S-ONE Handguard

  $424.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Threaded 8″ .300 Blackout Complete Upper Receiver w/ ATLAS R-ONE Handguard

  $459.99 – $489.99 Select options This product has multiple variants. The options may be chosen on the product page
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  M4E1 Threaded Assembled Upper Receiver – Anodized Black

  $147.99 Read more
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  M4E1 Threaded Assembled Upper Receiver – FDE Cerakote

  $165.99 Read more
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  M4E1 Threaded Assembled Upper, No Forward Assist – Anodized Black

  $139.99 Add to cart
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  M4E1 Threaded Assembled Upper, No Forward Assist – FDE Cerakote

  $157.99 Read more
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  M4E1 Threaded Complete Upper, 14.5″ 5.56 Mid-Length Barrel w/ Pinned Epsilon 556SL, 12″ M-LOK ATLAS S-ONE HG – Anodized Black

  $539.99 Read more
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  M4E1 Threaded Stripped Upper Receiver – Anodized Black

  $125.99 Read more
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  M4E1 Threaded Stripped Upper Receiver – FDE Cerakote

  $148.99 Read more
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  M4E1 Threaded Stripped Upper, No Forward Assist – Anodized Black

  $128.99 Add to cart