--- title: "AERO PRECISION M4E1 CallahanCam 9\" Atlad M-Lok Builder Set" canonical_url: "https://www.kygunco.com/product/aero-precision-m4e1-callahancam-9-atlad-m-lok-builder-set" meta: author: KYGUNCO "og:image": "https://cdn.kygunco.com/assets/products/134505/thumbnail.jpg?v=1729539716" "og:image:height": "500" "og:image:width": "500" "og:title": "AERO PRECISION M4E1 CallahanCam 9\" Atlad M-Lok Builder Set" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Gun Parts](https://www.kygunco.com/category/shooting/gun-parts) / [Handgun & Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts) / [Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts) / [Receivers & Lowers](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts/receivers-and-lowers) / RPR-APCS100280 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/134505/main.jpg?v=1729539716) For illustration purposes only, this image may not be an exact representation of the product. # AERO PRECISION M4E1 CallahanCam 9" Atlad M-Lok Builder Set $494.11 ** 5 interest-free payments of **$98.82** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** ![Credova logo](https://www.kygunco.com/brands/credova.svg) Pay over time with ![Credova text logo](https://www.kygunco.com/brands/credova-text.svg) ** Online In Store ** Free Shipping Enjoy delivery to the Lower 48 States at no cost. ** Ships To FFL Dealer Handled by our expert shippers in Bardstown, KY. Item # 134505 Style RPR-APCS100280 Condition New Manufacturer [Aero Precision](https://www.kygunco.com/brand/aero-precision) Model M4E1 Caliber MULTI Weight 2 lb Action Semi-Auto ### Aero Precision M4E1 CallahanCam™ 9" ATLAS S-ONE M-Lok Builder Set 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](https://republicrifle.squarespace.com/). 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! **Includes:** - M4E1 Threaded Upper Receiver finished in CallahanCam™ Cerakote. Upper receiver is assembled and includes the forward assist, dust cover and barrel nut. - 9" ATLAS S-ONE M-LOK Handguard finished in CallahanCam™ Cerakote (Mounting Kit Included) - M4E1 Lower Receiver finished in CallahanCam™ Cerakote ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## More from Aero Precision ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/aero-precision-m4e1-callahancam-9-atlad-m-lok-builder-set#webpage","@type":"WebPage","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"AERO PRECISION M4E1 CallahanCam 9\" Atlad M-Lok Builder 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