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  1. #1
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    Please Help Me Identify this Vintage Colt

    Here is my analysis. I welcome everyone's polite and respectful input, at least until Scott Ryan chimes in and then that will settle the matter.

    My conclusion is that this is a very early Colt 733, part of the famously hard to identify "transitional" 700 series when Colt seemed to put together rifles with whatever parts were on top of the parts pile. This would be the first time I have seen a 733 that was not stamped M16A2 (whether on an A1 or A2 lower or not).

    You decide. If I have misidentified any aspects below please correct me. Click on each picture for a HIGH resolution photo. If additional photos are needed to make a definitive identification ask and ye shall receive.

    BUFFER: Standard Carbine Buffer.
    SPRING: Standard Carbine Spring.
    BUTTSTOCK: 3rd Generation Collapsing Stock. Factory staked in place with varnish over staking.
    BUTTSTOCK MATERIAL: Fiberlite.
    TUBE: 4-Position Tube.
    LOWER RECEIVER: Full Fence.
    GRIP: A1
    PROOF MARKS / FORGE CODE: Colt Forge Mark inside Carry Handle below Rear Sight.
    PROOF MARKS / FORGE CODE: Colt Forge Mark on Front Site.
    REAR SIGHT: Standard "Late Production" A1 Sight.
    EJECTION PORT COVER: "Late A1 Production" Type.
    FORWARD ASSIST: "Original" Tear Drop Assist.
    BOLT GROUP: Standard Colt Bolt Group with a "C" marked Carrier, and a "MPC" marked Bolt.
    HANDGUARD SLIP RING: Tapered.
    BARREL DIAMETER: 0.625" at the Front Sight Base.
    BARREL LENGTH:11.5".
    BARREL TWIST RATE: Do not know. Probably 1/7.
    BARREL MARKINGS: C MP CB.
    HANDGUARDS: Carbine Handguard with Single Heat Shield.
    FLASHHIDER:A1 "Birdcage".
    Last edited by lawdawg97; 07-24-14 at 19:41.

  2. #2
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    It is most likely an early 733.

    It should have a 2 position tube, not 4 position.
    "Not every thing on Earth requires an aftermarket upgrade." demigod/markm

  3. #3
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    Thank you. I will verify 2 position tube.

  4. #4
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    Quote Originally Posted by scottryan View Post
    It is most likely an early 733.

    It should have a 2 position tube, not 4 position.
    Have you seen an R0733 with a bayonet lug before?

    Something is not right here. I'm OK with the transitional model theory until we run into a 1/7 twist A1 barrel. I'm gonna guess the upper receiver is a carfle.
    Last edited by MarkG; 06-13-13 at 00:31.

  5. #5
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    Thank you for your observations
    The bayonet lug is proper on 11.5 inch Commandos
    The barrel twist rate I cannot confirm
    The tube is two position which I was able to confirm per Scott's post
    Last edited by lawdawg97; 06-13-13 at 08:21.

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    Quote Originally Posted by lawdawg97 View Post
    Thank you for your observations
    The bayonet lug is proper on 11.5 inch Commandos
    The barrel twist rate I cannot confirm
    The tube is two position which I was able to confirm per Scott's post
    To the best of my knowledge, C MP CB marked barrels have always been 1/7.

  7. #7
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    Quote Originally Posted by MK18Pilot View Post
    Have you seen an R0733 with a bayonet lug before?

    Yes.

    Some late 639s and early 733s have bayonet lugs. It is not common but they do exist.
    Last edited by scottryan; 06-13-13 at 09:08.
    "Not every thing on Earth requires an aftermarket upgrade." demigod/markm

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    Transferable?

  9. #9
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    Yes! Pre-1986 transferable. On a form 3 waiting to start form 4 paperwork.

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