The M16 family part 4; M16A4

Continuing on from the M16A2 we take a brief look at the successor; the M16A4. Though from the outside the rifles look different most of the changes over the service life of the M16 were between the A1 and A2 you can see the video showing the differences here
https://rumble.com/v2eqsgo-the-m16-rifle-family-part-3-m16a2.html