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View Full Version : Vietnam Milsurp M-16 upper with semi-auto bolt is this legal?


anotherone
08-08-2006, 12:30 AM
If this had just been 10 or 15 years ago I wouldn't even bother posting this. But with the blurb in the 2006 Bushmaster catalog that says "The ATF's position is that if there is even one M-16 component in your AR-15 it is a machinegun" I figured I may as well get a second opinion.

The upper in question is an early 1970s Colt M-16 upper with NO bolt and NO charging handle. I intend on using a semi-auto bolt and installing it on an AR-15 (with a little machine work of course). In my opinion this is lawful because the upper and barrel themselves are not machinegun "components". What do you guys think?

saki302
08-08-2006, 1:14 AM
It's fine. The upper should drop right onto a mil spec AR15 receiver. There is no difference between an M16 upper and an AR upper.

In fact, due to Colt's manufacturing decision, it's even OK to have a full auto bolt carrier in an otherwise semiauto gun (I believe).

-Dave

rorschach
08-08-2006, 2:15 AM
Correct. I recall reading a post on ARF about this very topic. M16 bolt carriers are OK in AR uppers. Any M16 fire control component in an AR lower constitutes a machinegun. M16 triggers, hammers, disconnectors, safety selectors, autosears, DIAS, and lightning links are a no-no.

anotherone
08-08-2006, 2:25 AM
So I won't even have to machine the lower to accept the milsurp upper? Why the heck didn't I take on this project earlier!?!? I've always wanted a Vietnam era M-16 clone!

bwiese
08-08-2006, 5:08 AM
So I won't even have to machine the lower to accept the milsurp upper? Why the heck didn't I take on this project earlier!?!? I've always wanted a Vietnam era M-16 clone!

Should drop on a lower fine. No machining, no work.

It's legal, too - the only M16 parts to avoid are hammer, trigger, disconnector and selector (i.e., fire control system).

Why you want a 1-in-12" twist pencil barrel is another thing though...

rorschach
08-08-2006, 9:55 AM
So I won't even have to machine the lower to accept the milsurp upper? Why the heck didn't I take on this project earlier!?!? I've always wanted a Vietnam era M-16 clone!

You dont have to machine to lower to make the upper fit, but to make an accurate M16A1 style clone, you will need to grind off the raised reinforcement around the buffer tube threads, and square off the area underneath the front pivot pin. Norrells and Duracoat both make an early-Colt type grey finish. You'll also need an A1 stock, which is a bit shorter than the current A2 stock, and an A1 pistol grip, which doesnt have the small finger swell. They really look sharp with the old style M7 bayonet too.

http://www.ar15.com/forums/topic.html?b=3&f=123&t=290894

Of couse you dont have to go through all that work, just build a rifle that makes you happy!

anotherone
08-08-2006, 1:23 PM
The upper I'm looking at appears that it could be Model 604 USAF M-16. Probably didn't see any wartime action then...

Dump1567
08-08-2006, 6:39 PM
Why you want a 1-in-12" twist pencil barrel is another thing though...

Because after you get done building all your whiz-bang uber-tactical rifles, it's nice to get back to basics.;)
More Retro love can be found here: http://www.ar15.com/forums/forum.html?b=3&f=123

http://img.photobucket.com/albums/v470/Dump1567/AF-1.jpg

http://img.photobucket.com/albums/v470/Dump1567/july4-4-1.jpg