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M4E1 CallahanCam™ 15" ATLAS S-ONE Builder Set - Limited Run

Out of stock

Our June Builder Set features an M4E1 Threaded set with an ATLAS S-ONE Handguard and M4E1 Lower Receiver with a CallahanCam™ Cerakote finish by Republic Rifle.

This package deal includes the finished pieces you need to assemble your own CallahanCam™ M4E1 Rifle, including an M4E1 Threaded Upper Receiver, M4E1 Lower Receiver and a 9" ATLAS S-ONE Handguard of choice all finished in custom CallahanCam™ Cerakote. Stand out at the range with a unique and eye catching build. This is a one time offer for this finish - once they are gone, they are gone!


  • M4E1 Threaded Upper Receiver finished in CallahanCam™ Cerakote. Upper receiver is assembled and includes the forward assist, dust cover and barrel nut.
  • 15" ATLAS S-ONE KeyMod or M-LOK Handguards finished in CallahanCam™v (Mounting Kit Included)
  • M4E1 Lower Receiver finished in CallahanCam™ Cerakote

This June Builder Set is also available in an M4E1 (AR15) 9" Enhanced Handguard, M4E1 (AR15) 15" Enhanced Handguard, M4E1 (AR15) 9" ATLAS S-ONE Threaded or M5E1 (.308) Enhanced configuration.

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Shipping to FFL Dealer RequiredYes
Made In America?Yes
Select Your FinishCallahanCam™
Weight(s)KeyMod: 25.49 oz / M-LOK: 25.75 oz
Other FeaturesOne time run. Limited quantities available.
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