Original Colt M16 Rear flip Aperture used on the AR15 / M16 / M16A1 models.. as well as all other Colt models using the original AR15 Rear Sight Assembly.
Available in Black or earlier Grey finish (choose in the pull-down menu above)
If you are looking for the later M16A2 / M4 Aperture (Here)
** Note: The earlier AR15 and later M16A2 flip Apertures are interchangeable with each other since the external dimensions are the same. Only the Aperture hole size for the 0-200 meter is larger on the M16A2 / M4.
This is an Original Colt M16 take-off part and may show signs of use.
Made in the USA
THIS PRODUCT IS FOR THE APERTURE ONLY NOT THE FULL ASSEMBLY.