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Page AR-15 » AR-15 / M-16 Retro Forum
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Posted: 8/22/2016 11:41:10 PM EDT


This is a CH marked (no proofs) C7 upper and 6933 barrel marked C MP CB

Obviously this not a factory upper but if I wanted to take this and make it as close to a factory 733 (think the movie heat) and wanted to also make as earlier as factory copy as possible then what would be the most appropriate:

Lower receiver configuration?

Lower receiver markings?

Lower/upper receiver color?

Bolt Carrier group type?

Buffer tube (color and positions)?

With or without bayo lug?

Many thanks
Link Posted: 8/23/2016 2:19:03 AM EDT
[#1]
The upper, just have the bayonet lug ground off and you are done.

For the lower, it will vary.

I used a early 90s Colt 6520 lower with staked 2 position buffer tube on mine. It had all the correct grey colored parts.

An original ful auto would have been an A2 lower, marked "M-16A2", greyish in color, 2 position tube with N stock.


Some also used A1 lowers, but the later (Heat carbines) used A2s.

Link Posted: 8/23/2016 6:50:36 AM EDT
[#2]
That is what I was thinking. I have  N1 stock/2 position tube set and an 80% A2 lower I think I will send to Braceman to engrave for me.

Truly KISS carbine

Thanks for feedback
Link Posted: 8/23/2016 8:59:53 AM EDT
[#3]

Discussion ForumsJump to Quoted PostQuote History
Quoted:


The upper, just have the bayonet lug ground off and you are done.



For the lower, it will vary.



I used a early 90s Colt 6520 lower with staked 2 position buffer tube on mine. It had all the correct grey colored parts.



An original ful auto would have been an A2 lower, marked "M-16A2", greyish in color, 2 position tube with N stock.





Some also used A1 lowers, but the later (Heat carbines) used A2s.



View Quote
^^^^ this pretty much sums it. Colt m16a2 commercial roll marks, grey with 2 pos. tube (got mine from Nodak), N1. Don't forget the old school CAR locking ring for the receiver extension. Far as I know Specialized Armament has a few still @ 45$ a piece for the real deal Colt pieces. Or the member HKILLER here makes old castle nuts into the old style lock rings, I have one from him and its a damn good repro.

 
Link Posted: 8/23/2016 9:03:59 AM EDT
[#4]
Been a year or two since I ordered, but Brownells had some old style rings as well.
Link Posted: 8/23/2016 9:37:27 AM EDT
[#5]
I pretty much have it all but the retro lower.

I stuck this on a SBR lower I have and man it just feels right.
Link Posted: 8/24/2016 6:38:26 PM EDT
[#6]
Why is it not a factory upper ? I have one identical to it on a Colt 733 shipped from Colt .ca. 1995/96. Just curious. And you are so right about it on an SBR (or on a select fire lower). It's my favorite set up.
Link Posted: 8/24/2016 9:40:32 PM EDT
[#7]
The 933 barrel probably has an "F" marked front sight base, while an original 733 barrel would not.
Link Posted: 8/24/2016 9:49:25 PM EDT
[#8]
I'll have to look at my 733 next to my 6933 upper. See what the differences are in the barrel.
Link Posted: 8/25/2016 9:44:52 AM EDT
[#9]
That is correct about the FSB.

The one in my picture has a non-F marked.

I had replaced it out with an M16A1 FSB

BTW the happy hole in a M16 has just gotten way to rich for my taste.
Link Posted: 8/30/2016 10:25:42 PM EDT
[#10]
BTW would the 733 in the movie Heat be expected to have a 4 position  buffer tube or an earlier 2 position?
Link Posted: 8/30/2016 10:28:00 PM EDT
[#11]
oops I see answer to my question above

2 position tube
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