Correct parts for M16A1 build.

[OneGuy67]

In 1985, our M16A1's had the old birdcage with no flat side, black nylon sling, round forward assist not tear drop, and had a trap door on the buttstock. We had rack numbers on the stock, sometimes painted, sometimes using an old label maker.

[mutt]

duck bill, but that's with slab side lower. Either DB or A1 is correct, unless you want the look of X year of the Colt production line

No specific model year. Just going for a plausible Vietnam era config.

You are most of the way to an A1E-F . Forward assist needs changed and it looks like an A2 lower? Remembering what my issue gun was like.. Well, I had a room full of them and being Medical we always were the last to get anything new. I carried an A1 into DS1.

I built one years ago before the kits came out. Nodak Spud will have the correct lower.

A1E-F? Not familiar with that one?
Upper is all Colt M16A1 minus the barrel which is a re-profiled BCM A2 (thanks Bert!). Forward Assist is a tear drop, so that should be correct? No?
Lower is a NDS-16A1 in the proper profile and color (had to wait a year for that one).

In 1985, our M16A1's had the old birdcage with no flat side, black nylon sling, round forward assist not tear drop, and had a trap door on the buttstock. We had rack numbers on the stock, sometimes painted, sometimes using an old label maker.

Cool, then I'll leave the rack numbers on the stock. I kinda like them any ways. It adds character.

[USMC88-93]

I have similar ambitions.

[SideShow Bob]

In 1985, our M16A1's had the old birdcage with no flat side, black nylon sling, round forward assist not tear drop, and had a trap door on the buttstock. We had rack numbers on the stock, sometimes painted, sometimes using an old label maker.

This, less the rack number on the butt stock for late 70s to early 80s.
Now all you need is the plastic brass deflector that snaped in under the carry handle and top of the receiver, and it would look like what I was issued then.