Colt parts for an M16A1

[Tony617]

Atlantic Firearms is sell the Colt parts for an AR15. Does not include the lower receiver or a barrel.

Colt M16A1 Rifle Kit for SALE - AtlanticFirearms.com

I don't own a full length AR15 but I am not sure about the quality of parts even they are apparently Colt parts.

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[Pandaz3]

I believe the Colt bolt for the BCG is the 'Gold' standard, as are most of the other Colt Parts. The Bolt is 158 Carpenter steel, with a MPI (Magnetic Particle Inspection) done. This was one of the 'MilSpec' requirements that many aftermarket suppliers fall short of. All Colt parts are indeed MilSpec, the only question is are these genuine Colt parts.

Colt Competition rifles have some non-Colt , built under license parts. Still pretty good, I have one.