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.357 Mag Compact Off-Duty Police (COP) 4 shot derringer

Discussion in 'Handgun Discussion' started by Hedrin, May 23, 2016.

  1. Hedrin

    Hedrin Portland area Bronze Supporter Bronze Supporter

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    Recently picked up a COP 4 shot .357. Anyone have any experience with one of these? The ones I have seen on YouTube, spring open when you pull the release mechanism. Mine does not. It functions perfectly in every other respect, so it isn't the worst of all problems. However, I would like to get it fixed.

    It came with a box, but no manual, but I found one online. It has an exploded view, but I'm not good enough with those to figure out what part (spring) might be faulty. Any ideas of what I should get?

    Fortunately YouTube has plenty of disassembly vids around.

    I'll post a range report here after I get it to the range. (Might be a while as I now have no $$$)

    COP01.jpg

    COP02.jpg

    COP03.jpg

    COP04.jpg
     
    Last edited: May 24, 2016
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  2. Joe13

    Joe13 NW of Vancouver Opinionated & Blunt Bronze Supporter 2015 Volunteer 2016 Volunteer

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    Looks really neat but I doubt it would give a .357 bullet enough time to get up to velocity.
     
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  3. bolus

    bolus Portland Gold Supporter Gold Supporter 2015 Volunteer 2016 Volunteer

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    watching it function on the World of Guns game, I dont see a spring. but there is a pin up front pictured here ( barrels are hidden in this shot). Is that pin in place?

    WOG_2016-05-23_18-32-59.png

    WOG_2016-05-23_18-36-26.png
     
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  4. drstrangelove

    drstrangelove Vancouver, WA Active Member

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    I remember when Leon shot his cop-shrink with one in Blade Runner.
     
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  5. Hedrin

    Hedrin Portland area Bronze Supporter Bronze Supporter

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    This is the case of wanting something more for its esthetics and cool factor, than its practicality. I can't see me ever actually carrying it. Another box ticked on my "cool, but mainly useless" list. (Mossberg Brownie and Cobray Pocket Pal, I'm still looking for you!)

    I've wanted one since I saw it in Blade Runner and found out it was a real gun. I understand that the gun for the movie was modified to shoot two barrels at once to give it more of a flash.

    Never mind about the spring. It is the airsoft version that springs open, not the real one apparently.
     
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  6. Sgt Nambu

    Sgt Nambu Oregon Bronze Supporter Bronze Supporter

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    Yeah, wouldn't really want one, but they are.....er........um..interesting! Not cute, interesting!;)

    I must say, you photographed it very nicely!:)
     
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  7. x2ndxall

    x2ndxall WA Bronze Supporter Bronze Supporter 2016 Volunteer

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    Cool.


    I wish it had four triggers...:D
     
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  8. Hedrin

    Hedrin Portland area Bronze Supporter Bronze Supporter

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    Thank you, iPad Air and my "full spectrum" lamp on my desk at work. Then a little retouch with Photoshop to even things out a bit because the brights were really hot and the shadows really dark.
     
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  9. x2ndxall

    x2ndxall WA Bronze Supporter Bronze Supporter 2016 Volunteer

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    Yeah, but if you're the rapist and that thing is in your face, you're probably going to seriously consider a new hobby.
     
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  10. Sgt Nambu

    Sgt Nambu Oregon Bronze Supporter Bronze Supporter

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    :rolleyes:I reckon it would be a pretty serious pecKeR wrecker!:rolleyes:
     
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  11. Hedrin

    Hedrin Portland area Bronze Supporter Bronze Supporter

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    179096_416227101752130_1930509514_n.jpg
     
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  12. Medic!

    Medic! What just happened? Has eagle eyes. But cant remember what he saw. Bronze Supporter

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    I have one new in box.

    The barrel is 3-3/16th'' vs a J-Frames 3-1/2'' barrel+ cylinder.
    And there is no cylinder gap. So the COP's velocity is probably a little better.

    My friend also had one. And we shot that gun a lot. Fun little gun.

    And as to a spring? There is none!
    So your gun is fine.

    You will notice as you tilt up the barrel. The ejector pushes out the shells.
    From there you shake them out. That's how it ejects.

    Before you shoot it much. Consider the value.
    These are sought after guns. And if something breaks. Parts are hard to come by.
     
    Last edited: May 24, 2016
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  13. skidder

    skidder Oregon Member

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    Conv started
     
  14. Sgt Nambu

    Sgt Nambu Oregon Bronze Supporter Bronze Supporter

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    The point is that the hollow points need high velocity, as out of a six inch, to expand properly!
     
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  15. Medic!

    Medic! What just happened? Has eagle eyes. But cant remember what he saw. Bronze Supporter

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    Thy make .38's that expand just fine at 850fps.

    And .45 will do it at 950fps.

    I don't think a .357 at 1000fps will have a problem. ;)
     
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  16. skidder

    skidder Oregon Member

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    Are you responding to my E mails ? I can't see anything from your reply's.
     
  17. bolus

    bolus Portland Gold Supporter Gold Supporter 2015 Volunteer 2016 Volunteer

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    Figured out how to record. interesting mechanism. 4 firing pins and a cam that rotates and hits each one in order

     
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  18. Medic!

    Medic! What just happened? Has eagle eyes. But cant remember what he saw. Bronze Supporter

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    Thanks Bolus!

    Now I have to worry about that complicated system. And all those tiny parts breaking.
    Never to be replaced! :D
     
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  19. Hedrin

    Hedrin Portland area Bronze Supporter Bronze Supporter

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    Dude! Look at my posts. I was up till 4AM. You sent me a message at 7am, then start freaking out an hour later? Chill out.
     
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  20. Hedrin

    Hedrin Portland area Bronze Supporter Bronze Supporter

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    I figured that out. I was getting it confused with the Airsoft model. It has a spring to keep it open, not the real thing.

    I'm likely to put mostly 38's through it as I understand it has something of a crotch-bite with full magnums. I have guns to fire. The only gun I have that I don't is a Japanese Nambu. Both because the ammo is rare and I don't fully trust the pistol. Probably sell it the day I get a Luger I can trust to fire.
     
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