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M4 CARBINE LOWER RECEIVER ASSEMBLY

M4 CARBINE LOWER RECEIVER ASSEMBLY

Factory Colt complete lower receiver assembly to build your AR15, M16 or M4. Compatible with all mil-spec AR15/M4/M16 upper receivers and roll marked "Piston Carbine". Manufactured to truly meet and exceed all Mil Spec standards. 

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Factory Colt complete lower receiver assembly to build your AR15, M16 or M4. Compatible with all mil-spec AR15/M4/M16 upper receivers and roll marked "Piston Carbine". Manufactured to truly meet and exceed all Mil Spec standards. 

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